Laboratory and Reagent Water
Laboratory and reagent water for reagent preparation, dilution and rinsing - ASTM Type I, Type II and Type III reagent water, USP purified water, deionized and distilled water from Ricca Chemical and general ASTM-grade suppliers. Stocked in bench bottles, gallon containers and carboys, graded by resistivity and total organic carbon. Wholesale case pricing for hospitals, reference labs and clinical procurement.
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Laboratory Water for Reagent Preparation and Dilution
Laboratory water is the purified water used to prepare reagents, dilute samples and rinse glassware, and its purity grade directly affects test performance. The catalog groups it by ASTM type and pack volume. Water grade is tracked in the laboratory formulary because resistivity, total organic carbon and microbial content determine which applications a given grade supports.
Laboratory Water Grades Stocked
- ASTM Type I reagent water - The highest purity grade, used for sensitive analytical and molecular applications that require maximum resistivity and low total organic carbon.
- ASTM Type II reagent water - General analytical grade used for reagent preparation and many routine chemistry applications.
- ASTM Type III reagent water - Used for glassware rinsing, dilution and general laboratory tasks where the highest purity is not required.
- USP purified water - Water meeting United States Pharmacopeia purified water specifications for defined applications.
- Deionized and distilled water - Deionized and distilled water in gallon and carboy volumes for general bench and dilution use.
Water Grade Overview
| Grade | Typical Application | Common Volumes | Key Parameter |
|---|---|---|---|
| ASTM Type I | Analytical, molecular | Bottle, carboy | Highest resistivity, low TOC |
| ASTM Type II | Reagent preparation | Bottle, carboy | General analytical purity |
| ASTM Type III | Rinsing, dilution | Gallon, carboy | General purity |
| USP purified | Pharmacopeia applications | Bottle, gallon | USP specification |
| Deionized / distilled | General bench use | Gallon, carboy | Low ionic content |
ASTM Grade and Purity Parameters
ASTM grading defines laboratory water by measurable purity parameters - resistivity, total organic carbon, sodium, silica and microbial content - with Type I the most pure through Type III for general use. Matching the water grade to the application keeps purity from limiting test performance while avoiding the cost of over-specifying. Carboy and bulk formats with dispensing options are stocked for laboratories that consume purified water at high volume for reagent preparation and rinsing.
Laboratory water is a foundational consumable that touches nearly every reagent preparation and dilution step on the bench, so demand tracks total testing volume rather than any single assay. Laboratories that prepare reagents in-house keep Type I and Type II water on standing orders in carboy volumes, where case pricing affects the base cost of reagent preparation across the laboratory. Order at the best Wholesale Prices with MAP Medical.
Frequently Asked Questions
What is the difference between ASTM Type I, II and III water?
ASTM grades laboratory water by measurable purity parameters including resistivity and total organic carbon. Type I is the most pure and is used for sensitive analytical and molecular work, Type II is a general analytical grade for reagent preparation, and Type III is used for glassware rinsing and general dilution where the highest purity is not needed. Matching grade to application keeps purity from limiting results without over-specifying.
What is the difference between deionized and distilled water?
Deionized water is produced by ion-exchange resins that remove charged ionic contaminants, while distilled water is produced by boiling and condensation that removes a broad range of contaminants including many non-ionic ones. Both are stocked for general bench and dilution use, while ASTM-graded reagent water is stocked where a defined purity specification is required.
What volumes of laboratory water are stocked?
Laboratory water is stocked in bench bottles, gallon containers and larger carboys, with dispensing options for high-volume use. Bottle formats suit low-volume benches, while carboy and bulk formats supply laboratories that prepare reagents and rinse glassware at high throughput. The full ASTM Type I through III range and USP purified water are available across these volumes.
Can labs order laboratory water in bulk?
Yes. Laboratory and reagent water is stocked in bottle, gallon and carboy quantities for hospitals, reference laboratories, physician office labs and licensed distributors. Standing order programs are available for high-velocity grades such as ASTM Type I and Type II reagent water. Contact our procurement team for tiered case pricing and standing order setup.
What grades of laboratory water should be in a formulary?
A core water formulary typically includes ASTM Type I reagent water for analytical and molecular applications, ASTM Type II for general reagent preparation, and Type III or deionized water for rinsing and dilution, with USP purified water added where a pharmacopeia specification applies. MAP Medical builds consolidated laboratory water packages matched to test menu and consumption volume - contact our team for an assessment.