The heterotrophic plate count (HPC), formerly known as the standard plate count, is a procedure for estimating the number of live heterotrophic bacteria in water. This test can provide useful information about water quality and supporting data on the significance of coliform test results. High…

Ammonium Hydroxide ACS Grade, CAS No. 1336-21-6 NH4OH, approx. 58%, FW = 35.05.

Acetic Acid, Glacial. ACS Grade, CAS No. 64-19-7 C2H4O2, FW = 60.05, 500 mL bottle

Reagent Set, Aluminum: AluVer® Aluminum reagent Powder Pillows, Ascorbic Acid Powder Pillows, Bleaching 3 Reagent Powder Pillows, Water-deionized Method: Aluminon Range: up to 0.800 mg/L Digestion Required 100/tests

For determination of Aluminum by the Eriochrome Cyanine R (ECR) Method (Hach Method 8326). Reagent set contains ECR Reagent Powder Pillows, Hexamethylenetetramine Buffer Reagent Powder Pillows and ECR Masking Reagent Solution for approximately 100 tests. Thomas No. 3241J05 …

For alkalinity determination by drop-count titration.

Reagent Set for Model NI-HRDT Digital Titrator Kit, Cat. No. 2930400. Range: 5-35% (50-350 g/L) NH3. Includes Sulfuric Acid Digital Titrator Cartridge and Wide Range pH Indicator. Approximately 100 tests. Accurate results - when and where you need them Fast and Flexible Versatile Economical

For alkalinity determination by sulfuric acid titration with the Digital Titrator (Hach method 8203). Alkalinity Reagent Set for AL/DT Alkalinity Digital Titrator Test Kit Phenolphtalein Method 10 – 4,000 mg/l CaCO₃ Approximately 40-100 tests

For aluminum determination by the aluminon method. Hach Method 8012. Range: up to 0.80 mg/L Al.

Ascorbic Acid reagent package (dilution solution and raw material) for the Series 5000 Low Range Phosphate process analyzer. Replenish every 30 days for continuous operation.

Expert Anionic Surfactants test made simple. Anionic Surfactants TNTplus® chemistry and your Hach spectrophotometer are engineered to simplify water analysis for accurate results, everytime. For determination of Anionic Surfactants by the Methylene Blue method. Easy and safe…

Method: Nitrogen, Ammonia Salicylate Sample Size: 5 mL pk/50 Powder Pillows

For determination of high range silica by the silicomolybdate method (Hach method 8185) Range: 1-100.0 mg/L SiO2. Also used in the iodometric method (Hach method 10100) for the determination of high range hypchlorite (50-150 g/L as Cl2).

55g For Rapid Liquid Silica Rapid Liquid methods offer economical way to analyze multiple samples

Expert Ultra High Range Ammonia test made simple. Ammonia TNTplus® chemistry and your Hach spectrophotometer are engineered to simplify water analysis for accurate results, everytime. For determination of Ammonia Nitrogen by the Salicylate Method. EPA compliant. Easy and safe…

Acid Reagent Powder Pillows For High Range Silica

Ammonium Chloride ACS Grade, CAS No. 12125-02-9 NH4Cl, FW = 53.49. 454 g Bottle.

For Saltwater Master Kit

For Nitrogen, Ammonia Salicylate Method

Refill contains reagents for 100 tests and includes: Arsenic Test Strips Arsenic Reagents #1, #2, #3, #4, and #5 New brown zip-lock bag

Acetylacetone for Colorimetric hardness. For use with AT1000 Hardness method.

For use in the heteropoly blue method (Hach method 8186) for the determination of low range silica (0-1.60 mg/L SiO2). Sample Size: 25 mL Method Name: Heteropoly Blue Pack of 1000 Powder Pillows

Ammonium Persulfate, ACS Grade, CAS No. 7727-54-0 (NH4)2S2O8, FW = 228.20. Assay: ≥98.0% 454g Bottle.

This standard is used as part of the standard kit for both the APA 6000 Ammonia and Ammonia/Monochloramine instruments

Includes reagents and test strips for 100 tests.

Expert Ultra Low Range + Ammonia test made simple. For samples with low ammonia concentrations - ideal for monitoring ammonia concentrations in wastewater effluent samples. Ammonia TNTplus chemistry and your Hach spectrophotometer are engineered to simplify water analysis for accurate…

(Ammonium-PTSA) Protein-TKN standard: 7.402% N, 46.26% crude protein. For checking accuracy and digestion recovery in Total Nitrogen and TKN determinations. 25 g bottle. See 2277800 for the complete set of three standards with increasing resistance to digestion.

0-3.0 mg/L Ascorbic Acid Solution 450mL

For determination of low range silica by the Heteropoly Blue Method (0 - 2.0 mg/L SiO₂). Optional reagent for high range Phosphate by the Amino Acid method.