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Colorimeter, TTi 3000


Analyte System Method/Chemistry Standard/Equivalance or Description Comparator Cell
Alkalinity, Total Electronic meter Bromocresol green 0-250 ppm total alkalinity as CaCO₃ NA 9601
Azole Electronic Bisulfite-UV oxidation 0-25.0 ppm tolytriazole NA 9601
Boron Electronic meter Azomethine H 0-2.00 ppm B NA 9601
Bromine, Total Electronic meter DPD 0-10.00 or 0-20.0 ppm bromine (Br₂) NA 9601
Chlorine Dioxide Electronic meter DPD 0-8.0 ppm ClO₂ NA 9601
Chlorine, Free & Total Electronic meter DPD 0-8.0 ppm chlorine (Cl₂) NA 9602
Chlorine, Free & Total Electronic meter DPD 0-4.00 or 0-10.0 ppm chlorine (Cl₂) NA 9601
Copper Electronic meter Cuprizone 0-3.00 ppm Cu NA 9601
Copper, Free Electronic meter Porphyrin 0-0.200 ppm Cu NA 9601
Cyanuric Acid Electronic Turbidimetric (Absorptometric) 7-120 ppm CYA NA 9601
Hardness Calcium 800 Electronic meter Alizarin red 0-800 ppm calcium hardness as CaCO₃ NA 9601
Hardness, Calcium Electronic meter Calmagite 0-4.00 ppm calcium hardness as CaCO₃ NA 9601
Hardness, Total Electronic Calmagite 0-500 ppm total hardness as CaCO₃ NA 9601
Hardness, Total Electronic meter Calmagite 0-4.00 ppm total hardness as CaCO₃ NA 9601
Hydrazine Electronic meter p-Dimethylaminobenzaldehyde 0-1.50 ppm N₂H₄ NA 9601
Hydrogen Peroxide (Biguanide Shock) Electronic Iodide catalytic oxidation 0-2.00 ppm H₂O₂; By dilution: 2-20, 20-100, or 100-125 ppm H₂O₂ NA 9601
Iron Electronic meter Tripyridyl-s-triazine 0-4.00 ppm Fe NA 9601
Iron, Ferrous Electronic meter Phenanthroline 0-3.00 ppm Fe²⁺ NA 9601
Iron, Total Electronic meter Proprietary 0-0.300 ppm Fe NA 9601
Manganese Electronic meter Persulfate 0-30.0 ppm Mn NA 9601
Manganese 0.8 Electronic meter PAN (1-(2-Pyridylazo)-2-napthol) 0-0.80 ppm Mn N/A 9601
Molybdenum Electronic meter Thioglycolate 0-60.0 ppm Mo NA 9601
Molybdenum Electronic meter Ternary complex 0-3.30 ppm Mo NA 9601
Monopersulfate (Oxidizing Shock) Electronic meter DPD 0-10.0 ppm chlorine (Cl₂) NA 9601
Nitrate 44 Electronic meter Zinc Reduction/Chromotropic Acid 0-44 ppm NO₃ˉ; 0-10.0 ppm NO₃ˉN NA 9601
Nitrite Electronic meter Ferrous sulfate 0-150 ppm NO₂ˉ; By dilution: 150-1500 ppm NO₂ˉ NA 9601
Other Other Colorimetric absorption analysis: TTi Colorimeter Series Five secondary absorbance standards to verify instrument performance at all wavelengths, instruction, case
Other Electronic meter Colorimetric absorption analysis: TTi 3000 Colorimeter Colorimeter preprogrammed for water treatment professionals. Does 30+ preprogrammed tests; 8 user-developed tests. Contains two 15 mm sample cells, two 25 mm sample cells, one 50 mL dilution vial, one foam brush, four batteries, one AC power adapter, one USB cable, foam insert for soft carrying case, PC App, lifetime free access to new tests for TTi 3000, Quick-Start Guide. Purchase colorimeter reagent packs and carrying case separately. NA NA
Oxygen Scavenger Electronic meter Iron reduction 0-1.000 ppm carbohydrazide; 0-0.700 ppm DEHA; 0-2.450 ppm erythorbic acid.; 0-2.000 ppm hydroquinone; 0-3.000 ppm MEKO NA 9601
pH Electronic meter Phenol red 6.50-8.50 NA 9601
pH w/ acid/base demand Electronic meter Phenol red 6.50-8.50 NA 9601
Phosphate Electronic meter Molybdovanadate 0-70.0 ppm PO₄³ˉ NA 9601
Phosphate Electronic meter Molybdenum blue 0-3.00 ppm (20-3000 ppb) PO₄³ˉ NA 9601
Phosphonate Electronic meter Persulfate-UV oxidation 0-30.0 ppm PO₄³ˉ NA 9601
Polymer, Free Electronic meter Turbidimetric (Absorptometric) 0-20 or 20-500 ppm polymer as PAA (polyacrylic acid) NA 9601
Silica Electronic meter Heteropoly blue 0-4.00 ppm SiO₂ NA 9601
Silica Electronic meter Silicomolybdate 0-60.0 ppm SiO₂ NA 9601
Sodium Chloride (Salt) Electronic meter Turbidimetric (Absorptometric) 0-80 ppm NaCl; By dilution: 75-150, 150-500, 500-2000, or 2000-8000 ppm NaCl NA 9601
Sulfide Electronic meter Methylene blue 0-1.00 ppm S²⁻ NA 9601
Turbidity Electronic meter Turbidity (Absorptometric) 10-400 FAU NA 9601
Zinc Electronic Zincon 0-3.00 ppm Zn NA 9601


All reagents have a shelf life, whether they are liquids, powders, crystals, tablets, or test-strip pads. If kept dry, powders and crystals are very stable; acids are also long lived. Date of manufacture is not the controlling factor when it comes to shelf life—storage conditions are more important. As with all perishables, reagents are sensitive to environmental influences and will last longer under controlled conditions.

To this end, we recommend:

  • Storing reagents at a consistent temperature in the range if 36°–85°F (2°–29°C); extreme temperature fluctuation, say from a refrigerator to a hot car trunk, causes reagents to deteriorate.
  • Keeping them out of prolonged direct sunlight. (Note: their brown plastic bottles help protect very light-sensitive reagents.)
  • Segregating reagents from containers of treatment chemicals.
  • Replacing caps immediately and tightening them carefully so that exposure to air and humidity is limited.
  • Avoiding switching bottle caps, placing bottle caps on soiled surfaces, repouring reagents into contaminated containers, or touching test strip pads.

Taylor formulates its reagents to remain effective for at least one year, with only very few exceptions (molybdenum indicator in liquid form is one; after four months old it should be tested against a standard periodically). As a general precaution, replace all reagents more than one year old, or at the beginning of a new testing season.