For determination of Total Kjeldahl Nitrogen by the Simplified TKN (s-TKN™) method, using TNTplus vials. Hach Method 10242. Range: 0-16 mg/L TKN. 25 tests/pkg. Digestion is required. Reduce Errors with Bar-coded Vials No Reagent Blank Necessary Innovative Vial and Reagent Delivery …

For determination of Total Nitrogen by the Persulfate Digestion Test 'N Tube method: Hach Method 10071.  Nitrogen, Total Reagent Set, (Test 'N Tube) Method: Persulfate Digestion Range: up to 25.0 mg/L 50/test

(N-Serve®) Analytical Grade, CAS No. 1929-82-4. C6H3Cl4N, FW = 230.9. Nitrification inhibitor for BOD determination. For a prepared formula that is water soluble, see Nitrification Inhibitor.

For photometric determination of total alkalinity, using TNTplus™ vials. Hach Method 10239. Range: 25-400 mg/L as CaCO3. Reduce Errors with Bar-coded Vials and RFID No Reagent Blank Necessary Innovative Vial and Reagent Delivery Helpful package design

For determination of Chemical Oxygen Demand (COD) by the Reactor Digestion Method, using TNTplus™ vials. Hach Method 8000. Range: 3-150 mg/L COD. 150 tests/package. Reduce Errors with Bar-coded Vials No Reagent Blank Necessary Innovative Vial and Reagent Delivery Helpful package…

Test 'N Tube™ includes: Acid Digestion Solution Vials (High Range TOC), Buffer Solution (Sulfate), Micro Funnel, Indicator Ampules (High Range TOC), TOC Persulfate Powder Pillows Method: Direct Range: up to 700.0 mg/L C 50/test

Expert High Range TOC test made simple. TOC TNTplus® chemistry and your Hach spectrophotometer are engineered to simplify water analysis for accurate results, everytime. For determination of Total Organic Carbon (TOC) by the Direct Method. Easy and safe handling: The…

Expert Low Range TOC test made simple. TOC TNTplus® chemistry and your Hach spectrophotometer are engineered to simplify water analysis for accurate results, everytime. TNT810 has a range of 1.5 - 30.0 mg/L C and is designed for wastewater, surface water, process waters, and is USEPA…

Sample preparation set for the determination of total heavy metals with TNTplus® metal tests: TNT850 Lead, TNT852 Cadmium, TNT858 Iron, TNT860 Copper, TNT856 Nickel. For 50 digestions. Easy and safe handling: The innovative vial and reagent delivery makes tests easier to use than…

For determination of Total Trihalomethanes by the THM Plus™ Method. Hach Method 10132. Part of Reagent Set 2790800. 100 mL Bottle.

For determination of Total Trihalomethanes by the THM Plus™ Method. Hach Method 10132. Part of Reagent Set 2790800. 330 mL Bottle.

Approximately 300 tests per kit

Contains: AmVer Diluent Reagent Low Range Test 'N Tubes, Ammonia Salicylate Reagent Powder Pillows, Ammonia Cyanurate Reagent Powder Pillows Method: Salicylate Range: up to 2.50 mg/L NH3-N pk/50

For determination of Total Trihalomethanes by the THM Plus™ Method. Hach Method 10132. Part of Reagent Set 2790800. 30 mL Self-Contained Dropping Bottle.

Acid Hydrolyzable Phosphate Reagent Set Colorimetric Method Test 'N Tube 0-5.00 mg/L Contains: Phosphate Acid Digestion Vials, Persulfate Powder Pillows, PhosVer® 3 Reagent Powder Pillows, 1.54 N Sodium Hydroxide Solution, and Demineralized Water

2-Amino-2-hydroxymethyl-propane-1,3-diol, TRIS, THAM Reagent Grade Standard material and buffer component

Nitrogen, Nitrate (Test 'N Tube) NitraVer® X Method: Chromotropic Acid Range: up to 30.0 mg/L as Nitrate Nitrogen 50/tests per package

Expert Phenols test made simple. Phenols TNTplus® chemistry and your Hach spectrophotometer are engineered to simplify water analysis for accurate results, everytime. For determination of Phenols by the 4-Aminoantipyrine method. Easy and safe handling: The innovative vial and…

For determination of Total Trihalomethanes by the THM Plus™ Method. Hach Method 10132. Part of Reagent Set 2790800. Pack of 100 Powder Pillows.

Innovative Test 'N Tube Reagent Vials contain premeasured DPD reagent. Simply add sample and measure! 0-5.00 mg/L as Cl2 50 Reagent Vials

Nitrogen, Nitrite, Low Range, Test 'N Tube™ NitriVer® 3 Reagent Set Method: Diazotization Range: up to 0.500 mg/L 50/test

For determination of Chemical Oxygen Demand (COD) by the Reactor Digestion Method, using TNTplus™ vials. Hach Method 8000. Range: 20-1500 mg/L COD. Reduce Errors with Bar-coded Vials No Reagent Blank Necessary Innovative Vial and Reagent Delivery Helpful package design …

Nutrients Basic Reagent Set, TNTplus-includes 25 tests of each of the following: Nitrogen Total, LR Phosphorus, Total and Reactive (ortho), LR

Contains: AmVer™ Diluent Reagent High Range Test 'N Tube™, Ammonia Salicylate Reagent Powder Pillows, Ammonia Cyanurate Reagent Powder Pillows Method 10031: Salicylate Range: up to 50.0 mg/L NH3-N 50 tests

ToxTrak Toxicity Reagent Set, 25-49 tests (for use with a Hach Spectrophotometer)Includes 15 TBC medium tubes, 50 ToxTrak Reagent Pillows, ToxTrak Accelerator Soln., 20 test tubes, & transfer pipets. Method: ToxTrak™ Range: up to 100% inhibition 25-49 test

EDTA Cartridges for Digital Titrator For the determination of Total Hardness 0.716 M Digits = mg/L Fe in 50 mL, Digits x 8.95 x 10-4 = mmole Fe

Phosphorus HR Reactive, Test 'N Tube includes: Reactive High Range Phosphorus Test 'N Tube Vials, Water-deionized Method: Molybdovanadate Range: up to 100.0 mg/L PO4 3- Sample Size: 5 mL 50/test

For determination of tannin & lignin by the Tyrosine method

Tannin and Lignin Reagent Set Includes: Sodium Carbonate Solution, TanniVer 3 Tannin-Lignin Reagent and Water, deionized Method: Tyrosine Range: up to 9.00 mg/L Sample: 25 mL up to 100 test