USP

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USP is used primarily in laboratories. USP is a grade with enough purity to pass specific tests scheduled and prescribed by the US Pharmacopoeia (USP) and is determined acceptable for drug use in some instances.

NF

NF grade contains enough purity to meet the standards required by the National Formulary (NF). However, the grade impurities are still not known, thus making it more commonly used for educational purposes and as an upper-level intermediate quality chemical.

HPLC

HPLC is high-performance liquid chromatography. However, it's a technique used to separate, recognize, and calculate each chemical compound from a mixture.

LP Grade ( Low Particulate ) Grade

Low Particulate Grade (LP Grade) refers to a low level of particulate matter found in the chemical. This grade is generally used in cleanroom environments.

Laboratory Grade

Laboratory grade has the lowest purity. Its primary use is in educational applications. Laboratory grade isn't able to be used for medical, drug, or any kind of food due to its impurity level.

Pure

Pure is a lower-level intermediate quality. Even though this grade contains some impurities, it is best for educational purposes due to its purity being more than enough.

Technical

Technical is a good-quality grade for industrial use but must be used with caution when substituting for reagent-grade or a lab-grade chemical.

Before ordering chemicals, follow the below tips to make sure you're ordering the right chemical for the correct use.

• Make sure you're buying chemicals from a reputable company

• Make sure the chemicals come with a certificate of authenticity

• Make sure to order the correct chemical grade

• Make sure you have a proper waste disposal system for any purchased chemicals

• Make sure you understand the most effective use for the chemical

• Make sure you have the proper (temperature) storage available 

The key to chemical ordering success is to determine and understand the exact needs before making any purchases, and if you don't know what you need, reaching out to a proven chemical supplier, is the best place to start. By doing the proper research upfront, you'll keep everyone in the office safe while keeping shipping and chemical costs down.

For over 40 years, Lab Pro Inc. has been committed to providing critical laboratory chemicals and reagents in California and worldwide. To learn more, visit the biggest Lab Supply showroom in California, or contact us online or at 888-452-.

Chemical Grades

What are chemical grades?

Chemical grades are a way of quantifying the purity of a particular chemical. There are several different standards set by various organizations, such as the American Chemical Society and the United States Pharmacopeia.

What are the different grades of chemicals?

There are many different grades currently in use. Some are standardized, like ACS and USP, while others (like lab or technical grade) are slightly more subjective and not as common. Here, we&#;ll cover some of the most commonly used grades. ACS: Sometimes interchangeable with reagent or GR grade, this grade meets or exceeds the purity standards set by the American Chemical Society (&#; 95% purity). This grade is acceptable for food, drug, or medicinal use, but is more expensive than lesser grades due to the high purity requirement. USP: USP grade chemicals meet or exceed the standards set by the United States Pharmacopeia, the organization that sets the bar for chemicals that can be used in pharmaceutical products. USP grade is therefore equivalent to pharmaceutical grade. NF grade: This is a standard set by the National Formulary (NF). The National Formulary and the United States Pharmacopeia co-publish a joint compendium of purity standards every year, known as the USP-NF. They are typically comparable to USP grade in terms of purity, although it&#;s best to check the yearly compendium if more specific information is needed. HPLC: HPLC is an acronym for High Performance Liquid Chromatography, a versatile analysis technique that requires high-quality materials to provide reliable results. HPLC grade chemicals are specifically manufactured for HPLC. They typically have a purity of over 99.9% and a low viscosity. Food grade: Food grade is a little tricker. They can signify that a chemical additive is safe for consumption when added to food (like citric acid and sodium benzoate). They can also signify that a chemical is safe to use around food, for cleaning kitchen spaces and cookware, and ingesting trace amounts won&#;t be harmful (like food grade ethanol). Laboratory grade: Lab grade chemicals are not as pure as reagent grade chemicals (but still relatively pure) and their exact level of impurity is unknown. They&#;re very popular for educational laboratory purposes, but are not suitable for food, drug, or medicinal use. They are also classified as LR grade. Technical grade: Technical grade chemicals are high enough quality for industrial use, but not for food, drug, or medicinal use. They&#;re typically used in large scale commercial manufacturing.

What is AR/OR?

AR grade is the &#;standard Macron Fine Chemicals&#; grade of analytical reagents; suitable for laboratory and general use&#;, and OR grade signifies organic reagents suitable for research applications. These are good examples of trademarked grades. A lot of companies make their own designations for chemical purity, like VWR&#;s Macron Fine Chemicals&#; grades (AR, AR Select, ChromAR, etc.) and Sigma Aldrich&#;s BioXtra and BioReagent grades. The easiest way to find out about these sorts of specific grades is to use the company&#;s own guideline to them. Most companies have some sort of chart or table available: for example, you can find Sigma Aldrich&#;s grades here and Fisher Scientific&#;s here.

What is a reagent? How many types of reagents are there?

A reagent is a substance that causes a chemical reaction. Reagents are typically divided into organic (those which contain carbon-hydrogen bonds) and inorganic (those which do not), although there are other categories based on your intended field of use. For example, in organic chemistry reagents are typically classified as nucleophiles and electrophiles.

What is the most acceptable chemical grade?

There is no universally acceptable chemical grade. As you have seen, there are dozens of different categories, each with their own specifications and uses. When deciding which is best for you, you should take your exact situation into consideration. Do you need a very high purity chemical, or is lower okay? What kind of budget are you working with? How readily available are chemicals in your area? These are all questions to consider when picking a chemical grade to use.

What do some of LabAlley&#;s chemical grades mean?

LabAlley has a few exclusive grades. Extraction grade means the chemical is suitable as a solvent for medicinal plant, herbal, and botanical extraction processes. Gradient grade means that the chemical is suitable for use in HPLC with gradient analysis.

What are some recommended grades for household and industrial use?

Lab grade, technical grade, or even ungraded chemicals are less expensive than high purity grades like ACS and USP, and are therefore more suitable for general purposes. These grades are often bought in 1-gallon bottles, 5-gallon pails, 55-gallon drums, 250 and 270-gallon totes, and pallet sizes. We have provided the most widely accepted definitions of chemical grading terminology, but they are not universal. To see how other companies and organizations may categorize these grades, check out these examples:

Boyang contains other products and information you need, so please check it out.

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Definition

Application

ACS

Meets or exceeds standards set by the American Chemical Society. 

Food, drug, medicinal use; any application requiring stringent quality specifications

USP

Meets or exceeds standards set by the United States Pharmacopeia. 

Pharmaceutical manufacturing, personal care, medical and first aid

NF

Meets or exceeds standards set by the National Formulary 

Pharmaceuticals, medical purposes

HPLC

High-purity with physical properties suitable for high performance liquid chromatography. 

High performance liquid chromatography

Food

Safe to use in or around food. 

For use in food or to clean surfaces and cookware that will be used with food

Laboratory 

Relatively high purity, but exact percentage and nature of impurities is unknown. 

Educational laboratories

Technical

Have a level of impurity making them unsuitable for high-purity applications but fine for industrial use. 

Industrial use, commercial manufacturing

Extraction grade 

Suitable as a solvent for medicinal plant, herbal, and botanical extraction processes. 

Medicinal plant, herbal, botanical extraction processes

Gradient grade 

Suitable for use in HPLC with gradient analysis. 

HPLC with gradient analysis

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