Dolomitic limestone
What is the difference between dolomite and limestone? Both are carbonate sedimentary rocks. Limestone is calcium carbonate. Dolomite is carbonate of calcium and magnesium. Dilute hydrochloric acid is used to distinguish limestone from dolomite. Limestone bubbles with acid and only powdered dolomite bubbles with acid. The image below shows the transition from limestone to dolomite.
Should you use dolomitic or calcitic lime?
You should only use dolomitic lime if you have a soil test that shows a serious magnesium deficiency in your soil as well as a calcium deficiency.
What is the chemical composition of dolomite limestone?
Dolomite is a double carbonate of calcium and magnesium, CaCO 3 , MgCO 3. It is of sedimentary origin, probably formed as a result of the chemical action of seawater with a high magnesium oxide content on limestone. Theoretically, dolomite contains: CaCO 3 MgCO 3 Or: CaO MgO .
What does dolomitic mean?
What does dolomite mean? Dolomite is a carbonate of calcium and magnesium with the chemical formula CaMg(CO 3 ) 2. It occurs in nature as a mineral and as a rock. As a mineral, dolomite mainly occurs in the form of diamond-shaped crystals, sometimes prismatic, translucent or transparent, colorless or white.
What is a dolomite used for usually?
- magnetite and chromite. Magnetite (Fe 3 O 4 , ie Fe 2 + Fe 3+ / 2 O 4 ) and chromite (Fe 2 + Cr 2 O 4 ) are part of the spinel.
- halite, gypsum and anhydrite. Halite (NaCl), gypsum (CaSO 4 2H 2 O) and anhydrite (CaSO 4 ) are the main components of sedimentary rock, rock salt, rock gypsum and the like.
- Epidote.
- Hematite.
- Limonite.
Why is dolomitic limestone better?
- Calcium deficiency in Wisconsin is rare in soils with a higher pH.
- If liming is required, the dolomite or calcite material will provide enough calcium to support plant growth.
- If liming is required, choose the most economical liming material.
- If you choose low-magnesium limestone, use caution to avoid magnesium deficiency.
What kind of rocks are limestone and dolomite?
Sedimentary rocks Sedimentary rocks Limestone and Dolomite: Limestone and dolomite are collectively called carbonates because they are mainly composed of carbonate minerals, calcite (CaCO3) and dolomite (CaMg2).
What is dolomite used for with plants?
- dolomite lime. Dolomite consists mainly of calcium and magnesium, two small nutrients necessary for healthy tomatoes.
- soil testing Before starting a tomato garden, test your soil with a commercial kit or service near you.
- tillage. Clay and clay soils are usually acidic.
- kidney rot.
What is the difference between dolomite and limestone countertops
Dolomite is slightly ■■■■■■ than limestone. Dolomite has a Mohs hardness of 4 and limestone (composed of the mineral calcite) has a hardness of 3. Dolomite is slightly less soluble in dilute hydrochloric acid.
What is the difference between dolomite and quartz countertops?
This is probably the greatest strength of dolomite countertops compared to quartz. Also available in beautiful shades of white and gray, processed stone is more scratch and stain resistant than dolomite. But quartz cannot withstand heat or sunlight, a hot pan will damage it for life.
What is the difference between marble and dolomite?
Dolomite is pressure resistant, which is very important for countertops designed for heavy weights. Dolomite is ■■■■■■ than average and not as brittle as marble. On the Mohs scale, dolomite has a hardness of -4, higher than marble on the Mohs scale.
What is the hardness of dolomite?
Dolomite splits or tears along smooth surfaces in three different directions. On the Mohs hardness scale, which indicates how hard a mineral is to scratch, dolomite is a 4. For reference, talc, which is very easy to scratch, has a 1 on the scale, and diamonds, which are incredibly hard to scratch scratch 10.
How long do dolomite countertops last?
Dolomite countertops generally last longer than marble countertops and can last for years, even decades, with proper homeowner care. Careful handling of metal and glass on dolomite will significantly increase durability. Once the stains have set, they cannot be completely removed because dolomite is still partially porous.
What is the difference between dolomite and limestone pavers
• Limestone is a calcium carbonate mineral, while dolomite is composed of calcium carbonate and magnesium. • Sand, clay and silt often occur as impurities in limestone, but not quite in dolomite. • Calcite limestone is often more expensive than dolomite.
What is the difference between limestone and dolomite?
Limestone partially replaced by dolomite is called dolomite limestone or, in older geological literature, magnesian limestone. dolomite, P. magnesian limestone, named after the French geologist D. Guy de Dolomier (1750-1801).- bn.
What is the composition of dolomite?
- General Considerations. Together with calcite and aragonite, dolomite makes up about 2% of the Earth's crust.
- Chemical composition.
- Crystal structure.
- Physical Characteristics.
- formation and emergence.
What type of rock is limestone?
Limestone is a type of sedimentary carbonate rock found on the Earth's surface. It forms when calcium carbonate crystals precipitate in water containing dissolved calcium. Limestone is made up of minerals such as calcite and aragonite.
Is dolomite lime good for soil?
While dolomitic lime works well when you need to increase your magnesium levels, too much magnesium creates new dangers. Too much magnesium can make the soil too dense, stunting plant growth and making it difficult to water the soil effectively.
What is the difference between dolomite and limestone rock
Dolomite, also called dolomite, resembles limestone in many ways. The main difference between the two rocks is that the main constituent of dolomite is the mineral dolomite and not calcite as in limestone.. In both cases, dolomite contains more magnesium than calcium.
What is the difference between lime and calcium?
Lime dust is a very fine dust (particle size smaller than mm) that is generated in lime kilns. Wet lime is also called liquid lime. The effectiveness of liquid lime is determined by the NV value, not ENV. Dolomite is a mixture of calcium carbonate and magnesium carbonate (CaCO3 and MgCO3).
Can you spread lime with a fertilizer spreader?
If you have acidic soil, increasing the pH with lime will more effectively increase the amount of other fertilizers you use on your lawn. The easiest way to apply lime to your lawn is to apply it with a spreader. You can find agricultural lime spreaders for sale almost everywhere, including at your local nursery or garden supply store.
Should you use dolomitic or calcitic lime for gardening
“Dolomite lime must be used in magnesium-poor soils, otherwise lime can be used. Many organic soils and some Piedmontese soils are naturally rich in magnesium, most sandy soils of coastal plains are low in magnesium. The soil test report indicates which lime you should use.
Is calcitic lime the same as dolomitic lime?
Unlikely. Calcite lime is mainly extracted from calcium carbonate deposits. Dolomite lime is extracted from deposits of calcium carbonate in combination with magnesium carbonate and contains much more magnesium. The most important factors in deciding which of these types of lime to apply to your soil are the soil pH and magnesium content.
Is dolomitic lime bad for the soil?
Dolomite is recommended for the correction of calcium and magnesium deficiency. However, depending on the magnesium content, dolim can often cause more damage and problems than the original cost. Excess magnesium is often associated with soil stickiness, encrustation, compaction, decreased aeration and pound after pound of nitrogen in the soil.
When should I use dolomite lime?
You should only use dolomitic lime if you have a soil test that shows a serious magnesium deficiency in your soil as well as a calcium deficiency.
Is dolomite lime good for magnesium deficiency?
Magnesium deficiency is much more common in fast-draining soils, especially sandy soils, while loamy and loamy soils rarely suffer from magnesium problems. If your fields have a lot of clay soil, you probably don't want to use dolomite lime.
Should I use gypsum or dolomitic lime for liming?
However, when growing a crop that requires a low pH and liming is not recommended, gypsum can provide calcium to the crop. If liming is required, dolomite or calcite will provide enough calcium to support plant growth. Dolomite limestone springs have the added benefit of increasing the amount of magnesium available.
Should you use dolomitic or calcitic lime for soil
Both calcite and dolomite reduce soil acidity, creating a more favorable growing environment in previously acidic soils, so both are effective. Lime is generally the best choice for home use because it produces faster results and is less harsh on the floor.
What is calcitic lime used for?
Calcite Calcite has long been used to treat acidic soils. Careful application of powdered limestone to the soil will raise the pH to a neutral level, increase yields and improve the overall condition of the soil.
Should you use dolomitic or calcitic lime for painting
Calcite Calcite is just calcium, CACO3. Dolomite lime is calcium and magnesium, CaMg(Co3)2. If your soil needs magnesium, you need to apply dolomite lime, but the soil test shows enough magnesium but not enough calcium, you need lime.
Should you use dolomitic or calcitic lime for concrete
Dolomite lime reduces soil acidity more slowly than calcite lime (several months instead of weeks) and can have the side effect of hardening clay soils, further slowing plant growth. You should only apply dolim if your soil has a magnesium deficiency, which is defined by a soil test as a 6:1 ratio of calcium to magnesium.
Should you use dolomitic or calcitic lime for cooking
Use lime if the Ca:Mg ratio is less than 7:1. Use dolomitic lime if the Ca:Mg ratio is greater than 10:1. If the Ca:Mg ratio is between 7 and 10, check the base saturation of Mg and Ca. If the calcium saturation is less than 65%, use lime. If the Mg saturation is less than 10%, use dolomite lime.
What are the benefits of dolomite lime?
Benefits of dolomite lime. When it comes to raising and balancing the pH of your soil, limestone and dolomite are effective. However, unlike limestone, dolomite limestone also contains large amounts of magnesium. Magnesium is an essential mineral for healthy soil.
Should you use dolomitic or calcitic lime for lawns
Lime is most commonly used for lawns, but can also be useful for garden plants, shrubs and flowers. Dolomite Lime: Dolomite lime is extracted in the same way as lime, and is also crushed and sold as finely divided powder or granules. Dolomite lime contains calcium and magnesium.
Can you use dolomite lime on grass?
Dolomite lime is best used when the soil is low in magnesium. If the ratio of calcium to magnesium in the soil is 6:1 or more, then your soil has a magnesium deficiency. Under these conditions, plants and grasses grow weakly, turn yellow and lack deep roots.
What is the difference between dolomite lime and calcitic lime?
These similar products actually have a very different effect on their gender. The main difference is in the use of magnesium: dolomitic lime contains a lot of magnesium and calcium carbonate, while lime only contains calcium carbonate.
Is calcitic lime good for lawns?
Calcite Calcite is an important addition to lawn care and increases the acidity of the soil. As the name suggests, lime contains a good amount of calcium. Lime is significantly four times more efficient and faster than dolomite lime.
Should you use dolomitic or calcitic lime for cleaning
Lime is generally the best choice for home use because it gives faster results and is less ■■■■■■■ the floor. Dolomite lime reduces soil acidity more slowly than calcite lime (several months instead of weeks) and can have the side effect of hardening clay soils, further slowing plant growth.
What is dolomite used for?
- Antibiotic interactions (quinolones antibiotics) with DOLOMITE Dolomite may decrease the effectiveness of some antibiotics.
- Interaction of antibiotics (tetracycline antibiotics) with DOLOMIT Dolomite may decrease the effectiveness of some antibiotics.
- Bisphosphonates interact with DOLOMIT. Dolomite can reduce the amount of bisphosphate that is absorbed by the body.
Chemical composition of an
Chemical composition can be defined as the arrangement, proportion and type of atoms in chemical molecules. Chemical composition changes when chemicals are added to or subtracted from a substance. This is when the ratio of substances changes or when chemical changes occur in the chemicals.
What does chemical composition stand for?
Chemical symbols are abbreviations used in chemistry to represent chemical elements, functional groups, and chemical compounds. Chemical element designations usually consist of one or two letters of the Latin alphabet and are written with an initial capital letter.
What does a definite chemical composition mean?
"Definitive chemical composition" means that all manifestations of this mineral have a chemical composition that varies within a certain limited range. For example: The mineral halite (called "rock salt" in mining) has the chemical composition NaCl. Does sugar have a specific chemical composition?
What are some examples of chemical composition?
- gases
- liquids
- solids
- plasma (including most of the flame)
- cardboard box
- Canada
- Web
- Diamond
- shoe
- gold
What is chemical composition describes?
Chemical composition can be defined as the arrangement, proportion and type of atoms in chemical molecules. Chemical composition changes when chemicals are added to or subtracted from a substance. This is when the ratio of substances changes or when chemical changes occur in the chemicals.
Chemical composition examples
Examples of compounds are water (H2O), carbon dioxide (CO2), hydrogen chloride (HCl), sulfuric acid (H2SO4), potassium hydroxide (KOH), methane (CH4), acetic acid (CH3). K.O.). All these compounds contain at least two elemental atoms.
What are the common chemical compounds?
- Water. Water is the most abundant molecule on the Earth's surface and one of the most important molecules to study in chemistry.
- Salt The term salt can refer to a variety of ionic compounds, but is most commonly used in reference to table salt, which is sodium chloride.
- Sugar.
- Alcohol.
- Vinegar.
- baking powder.
- carbon dioxide.
- Ammonia.
- Glucose.
What are some examples of chemical substances?
- corrosive. Corrosive substances are chemicals that cause burns to skin, mucous membranes and eyes.
- oxidizing agent. Oxidizing agents are dangerous because they promote combustion.
- combustible. Flammable chemicals are flammable.
- Reacts with water. If chemicals that react with water come into contact with water or moisture, a violent reaction can occur.
- Pyrophorics.
- Toxics.
What are common chemicals?
- chemicals in bleach
- Chemistry in air fresheners
- chemicals in cosmetics
What are some examples of decomposition reactions?
- Production of calcium oxide or quicklime.
- Production of lithium oxide.
- Production of oxygen and carbon dioxide.
- In metallurgy for the extraction of metals from their oxides and chlorides by electrolytic decomposition.
What is definite chemical composition?
A certain chemical composition means that all manifestations of this mineral have a chemical composition that varies within certain limits. For example: The mineral halite (known in mining as rock salt) has the chemical composition of NaCl.
What is the chemical formula of calcite?
The mineral calcite forms rocks and has the chemical formula CaCO3. It is very common and can be found in sedimentary, metamorphic and igneous rocks around the world. Some geologists consider it a ubiquitous mineral, meaning it can be found everywhere. Calcite is the main component of limestone and marble.
Is calcite a compound or mixture?
A compound contains two or more types of atoms bonded together. a mixture contains two or more different substances that do not mix. The different substances in a mixture can be elements or compounds. How much air is ice? The ice, which is now 10% air, is as dense as it gets. Is solid water ice a mineral?
What elements are in calcite?
- Eudialyte,
- Selenite,
- Smithsonite,
- Petalite,
- Muscovite,
- Scapolite,
- blue kyanite,
- Rhodizite,
- Angelite,
- blue topaz.
Is calcite a non silicate material?
Calcite is the only common mineral that does not form a silicate rock, but does form calcium carbonate. Calcite is one of the most abundant minerals and an important rock-forming mineral in sedimentary environments. It is a major constituent of limestone and is found in other sedimentary rocks.
What is the meaning of dolomite?
Dol or mite (dō′ləmīt′, dŏl′ə) element 1. White or light colored mineral, mainly CaMg(CO3)2, used in fertilizers, as a refractory material for kilns and as a building and ceramic material.
What is dolomitic rock used for?
Sedimentary rock that resembles limestone, but mainly consists of the mineral dolomite. It is an important source of magnesium and its compounds, which is used as a building and refractory material. Derivative forms of dolomite dolomite (ˌdɒləˈmɪtɪk), adjective .
What are the different types of dolomites?
Dolmetsch DolníVestonice Dolomites Dolomites Dolomites Alps Dolomites Dolomites Dolomitisiert Dolomites.
What does dolomitic mean in medical terms
1. A type of sedimentary rock that looks like marble or limestone, but is rich in magnesium carbonate. 2. Light mineral, composed of calcium and magnesium carbonates. A source of magnesium used in pottery and as a fertilizer. Awareness Information: DOLOMITE is rarely used as a name.
What can you do with dolomite?
Learn about the mineral dolomite and learn about its structure and uses. Learn about the chemical formula, physical properties, prevalence, and various uses of the mineral dolomite in construction materials, agriculture, and pharmaceuticals. Updated: 01/11/2022 Rocks are mostly rocks.
What is dolomite rock?
This type of rock was formerly referred to as magnesic limestone in USGS publications, but is now known as dolomite rock, dolomite rock, dolomite limestone, or dolomite limestone. Dolomite is a mineral rich in calcium and magnesium, making it a good fertilizer for nutrient-poor soils.
What is the difference between natural limestone and dolomitic limestone?
Natural limestone is mainly composed of calcite and aragonite, but dolomite forms in the stone when calcium ions are replaced by magnesium ions. Dolomite lime is a rock that consists of 50% dolomite.
What does dolomitic mean in chemistry
Dolomite (/ˈdɒləmaɪt/) is an anhydrous carbonate mineral composed of calcium and magnesium carbonates, ideally CaMg(CO3)2. The term is also used for carbonate sedimentary rocks mainly composed of the mineral dolomite. Another name sometimes used for a type of dolomite rock is dolomite. Cristallo with Cortina d'Ampezzo.
What is a dolomite rock made of?
Dolomite (/ˈdɒləmaɪt/) is an anhydrous carbonate mineral composed of calcium and magnesium carbonates, ideally CaMg(CO 3 ) 2. The term is also used for sedimentary carbonate rock composed mainly of the mineral dolomite.
What is the difference between dolomite and calcite?
Micrograph of a thin section in transverse and linearly polarized light: the lighter grains of the mineral in the image are dolomite, the dark ones are calcite. Dolomite (/ˈdɒl.əˌmaɪt, ˈdoʊ.lə/) is an anhydrous carbonate mineral composed of calcium and magnesium carbonates, ideally CaMg(CO3)2.
What is dolomite glaze?
Dolomite is a carbonate (like mortar), because it loses a lot of weight during cooking, because it dissociates into MgO, CaO and CO2, this process is completed at a temperature of about 90 ° C. In many cases where CaO and MgO are used in the rough glaze, dolomite is an economical alternative to a mixture of calcium carbonate and talc.
What does dolomitic mean in geography
Dolomite, also known as dolomite and dolomite rock, is a sedimentary rock composed mainly of the mineral dolomite CaMg(CO3)2 and is found in sedimentary basins around the world. It is believed to have been formed by the erosion of lime and limestone mud after being deposited by magnesium-rich groundwater.
What is dolomite?
You may have heard the word "dolomite" used to describe a number of different things, so let's make sure we're on the same page about what we're really talking about. The real mineral dolomite is a carbonate of calcium and magnesium and has the chemical formula CaMg(CO3)2.
What is dolomitization of limestone?
Dolomitization can completely convert limestone to dolomite, or partially convert rock to dolomite limestone. Dolomite Aggregate – Dolomite aggregate used in the asphalt pavement of Penfield, New York.
What is the highest point on the Dolomites called?
dolomites. Italian: Dolomites. German: Dolomites. Western Dolomites near Gerdeina. The highest point. Meeting. Marbled. Height.
Why do people visit the Dolomites?
Many people visit the Dolomites to climb the via ferratas, protected paths through the cliffs created during the war. There are many excellent hiking trails through the Dolomites. They are called old vie (in German: Dolomiten Höhenweg) and are numbered from 1 to 10.
What does dolomitic mean in math
• DOLOMITIC (adjective) The adjective DOLOMITIC has 1 meaning: 1. refers to or consists of dolomite.
What is dolomitic limestone made of?
Dolomite lime is a rock that consists of 50% dolomite. Common limestone is mainly composed of calcite and aragonite, but dolomite forms in the rock when the calcium ions in the calcite portion are replaced by magnesium ions, a process known as dolomitization.
Is dolomite a good fertilizer?
Dolomite is a mineral rich in calcium and magnesium, making it a good fertilizer for nutrient-poor soils. Dolomite contains a large amount of calcium and magnesium, which makes it a good fertilizer.
Pelletized dolomitic limestone
What is Granular Dolomitic Limestone? SuperSods Granular Dolomite Lime is an easy-to-apply, dust-free limestone product that neutralizes soil acidity and is an important source of two secondary nutrients (calcium and magnesium). Centipedes, for example, like acidic soils, so they may not need lime.
When to use pelletized lime?
Use of Ag-lime granules to increase the pH in the feeding area. Check the pH to see how much lime you need to remove.
Where to buy pelletized lime?
Calcium Rich Lime (granulated) $-$ quantity. Choose the option 1 ton container (less than a truck) 1 ton in bulk FOB IA. Clear selection. Call them at 8002607933 or send them an email to order this product.
How much pelletized lime per square foot?
Granulated lime contains about 35% calcium by weight, so 6 pounds of granulated lime per 1,000 square feet would be an acceptable use. When lime pellets are used to increase the pH, the dosage depends on the current pH of the soil and the desired pH.
Where to buy dolomitic limestone
To find out where to buy dolomitic lime in New York, Pennsylvania, New Jersey, Virginia, West Virginia, Delaware, Maryland, and more, contact your local Baker Lime dealer. Their knowledgeable and knowledgeable staff can help you find the dolomite lime you need to grow your business.
Where to buy dolomite?
Dolomite Powder (1 lb. powder) from KAL at the Vitamin Store .
Where to buy dolomite powder?
Unfortunately, this item is only available in the Pacific Northwest and Alaska. When can I buy it at Home Depot? Hi LimelessInSeattle, looks like it's Soil Sweet 40 lbs. Dolomite Lime is an exclusive item that can only be purchased at Home Depot. Unfortunately they don't sell it with online inventory to buy.
Dolomitic limestone fertilizer
Dolomite is a mineral rich in calcium and magnesium, making it a good fertilizer for nutrient-poor soils. Dolomite lime is suitable not only as a fertilizer, but also for too acidic or unusually low pH soils.
Is dolomite lime fertilizer allowed in organic gardening?
It consists of about 50% calcium carbonate and 40% magnesium carbonate, resulting in about 22% calcium and at least 11% magnesium. When you buy garden lime, it is ground into granules, which can be large or very small, or it can be made into granules. Lime-based dolomite fertilizer is allowed in organic horticulture.
What is dolomitic limestone?
Garden-grade calcium magnesium carbonate, also called dolomite lime or simply dolomite, raises the pH of acidic soils.
What is dolomite lime used for?
Dolomite lime is used to raise the pH of acidic soil. It is often used as an alternative to lime when the soil also needs magnesium. The danger of using only lime is that too much calcium in the soil can prevent plants from absorbing magnesium. Instead, using dolomitic lime adds magnesium and calcium to the soil in a more uniform amount.
How much dolomitic limestone do I need to raise pH?
Buy bagged dolomitic limestone if your soil test shows that your soil has a low pH and low magnesium content. On average, you will need about 5 pounds of dolomite per 100 square feet of garden for every point it takes to raise the pH of your soil, but sandy soil requires less than clay soil.
Is dolomite harmful to health?
The document states that dolomite (stone chips, calcium carbonate, magnesium and other aggregates) has the following hazard characteristics: may cause cancer, may cause ■■■■■ (lung) damage through prolonged or repeated exposure, causes skin irritation and serious eye irritation.
Should I use dolomitic or calcitic lime?
Only use dolomitic lime if you have a soil test that shows a severe magnesium deficiency in your soil as well as a calcium deficiency. Still, calcium carbonate (also known as calcite or high-calcium lime) is often a suitable choice, as it is low in magnesium and often has a calcium-to-magnesium ratio of about 6:1 with 30% to 40% calcium and more.
Pulverized dolomitic limestone
50-pound dolomite limestone is on the OMRI list for handling acidic soil. Pulverized limestone is produced by crushing and filtering industrial grade limestone and dolomite. Calcium source for lawns and plants.
Dolomitic limestone msds
MATERIAL SAFETY DATA SHEET (SDS) Dolomite Limestone, Calcium, Magnesium, Carbonate For use as an ornamental stone, adhesion control or pH adjustment in soils.
Where to buy powdered limestone?
At garden centers you can buy large bags of lime powder, a hand spreader and a cultivator. The drip spreader allows you to apply an even amount of powder in your garden. The cultivator helps loosen and stir the soil after spreading the powder.
What is pelletized dolomitic limestone used for?
Leave a Comment Pennington Dolomite Granular Limestone works directly on the soil to raise pH while providing beneficial calcium and magnesium. This contributes to a more stable growing environment for lawns and grasses and eliminates problems such as ■■■■ spots, moss and weeds.
What is a pelletized limestone bag?
Granular limestone. Consisting of limestone in the form of granules, this limestone is the ideal fertilizer for lawns and gardens. The 40lb bag takes up a lot of floor space for your convenience.
What is a 40 lb bag of limestone?
Turn your landscape into a dreamscape with this 40 lb. granular limestone. Consisting of limestone in the form of granules, this limestone is the ideal fertilizer for lawns and gardens. The 40lb bag takes up a lot of floor space for your convenience. You need Adobe Acrobat Reader to view PDF documents.
What is limestone compost?
This limestone, consisting of limestone in the form of granules, is an ideal fertilizer for lawns and gardens. The 40lb bag takes up a lot of floor space for your convenience. You need Adobe Acrobat Reader to view PDF documents. Download a free copy from the Adobe website.