Chlorine Test Kits
The most widely used disinfectant for drinking water, chlorine is also important for sanitizing swimming pools, cooling towers, other industrial equipment, and in the treatment of municipal wastewater. Its measurement and control are vital for both safety and economic reasons. Many Hach chlorine tests have been accepted by the USEPA for reporting purposes. Test kits containing DPD colorimetric reagent are used most often for monitoring potable water, swimming pools, and waste effluent. Powder DPD dissolves and reacts with chlorine more quickly than tablet-form DPD, giving more accurate results. Powder DPD also has a considerable advantage over orthotolidine, a hazardous substance sometimes used as a chlorine test reagent. It is more stable than liquid DPD reagents, providing more reliable results. Kits for determining higher levels of chlorine use thiosulfate to measure chlorine titrimetrically.
For more information about chlorine, ranges, and uses see Chlorine Explained ![]()
Chlorine Low Range
| Test | Model | Method/Chemistry | Range(mg/L)* | # Tests | Prod # | Price | ||
|---|---|---|---|---|---|---|---|---|
| Free & Total | Pocket 1 Colorimeter™ II | Colorimeter/DPD | 0.02-2.00 F&T 0.1-8.0 F&T |
100 | 5870000 | $405.00 | ||
| Free | CN-66F2 | Color Disc/DPD | 0.1-3.5 | 100 | 223102 | $49.15 | ||
| Total | CN-66T2 | Color Disc/DPD | 0.1-3.5 | 100 | 223103 | $53.19 | ||
| Free & Total | CN-662 | Color Disc/DPD | 0.1-3.5 | 50F, 50T | 223101 | $56.15 | ||
| Free & Total | CN-702 | Color Disc/DPD | 0.02-0.7 0.1-3.5 |
100 | 1454200 | $73.39 | ||
| Free | CN-70F2 | Color Disc/DPD | 0.02-0.7 0.1-3.5 |
200 | 1454201 | $73.39 | ||
| Total | CN-70T2 | Color Disc/DPD | 0.1-3.5 0.02-0.7 |
200 | 1454202 | $75.65 | ||
| Free & Total | TS | Test Strips | 0-10 | 250 ind. wrapped | 2793944 | $165.00 | ||
| Free & Total | TS | Test Strips | 0-10 | 50 | 2745050 | $15.95 | ||
| Free | Cube | Color Cube/DPD | 0.5-2.5 | 50 | 2060300 | $24.85 | ||
| Total | Cube | Color Cube/DPD | 0.5-2.5 | 50 | 2060400 | $24.85 | ||
| Free & Total | CN-802 | Color Disc/DPD | 0.02-0.7 0.1-3.0 0.5-10T |
100 | 2129000 | $110.00 | ||
| Free | AccuVac Kit®2 | Color Disc/DPD | 0.1-2.5 | 25 | 2502050 |
$Contact Hach |
||
| Pkg of 25 free chlorine reagent ampules (resupply for Prod#: 2502050) | 2502025 | $24.39 | ||||||
| Total | AccuVac Kit2 | Color Disc/DPD | 0.1-2.5 | 25 | 2503050 | $Contact Hach | ||
| Pkg of 25 total chlorine reagent ampules (resupply for Prod#: 2503050) | 2503025 | $24.39 | ||||||
* mg/L unless otherwise noted; ppb = µg/L; ppm = mg/L.; gpg = grains per gallon; 1 gpg = 17.1 mg/L or 17.1 ppm.
1 EPA-accepted for wastewater and potable water. Approved by some states for potable water under specific conditions. Check with your regulatory agency.
2 EPA-accepted for potable water. Approved by some states for potable water under specific conditions. Check with your regulatory agency.
Chlorine Mid & High Range
| Test | Model | Method/Chemistry | Range(mg/L)* | # Tests | Prod # | Price | ||
|---|---|---|---|---|---|---|---|---|
| Total | CN-65 | Drop count titration/ Thiosulfate | 0.2-4 1-20 |
100 | 225401 | $75.19 | ||
| Total | CN-21P | Drop count titration/ Thiosulfate | 10-200 | 100 | 2444400 | $37.95 | ||
| Total | CN-DT | Digital Titrator/ Thiosulfate | 20-2,000 | 100 | 2471100 | $222.00 |
* mg/L unless otherwise noted; ppb = µg/L; ppm = mg/L.; gpg = grains per gallon; 1 gpg = 17.1 mg/L or 17.1 ppm.
1 EPA-accepted for wastewater and potable water. Approved by some states for potable water under specific conditions. Check with your regulatory agency.
2 EPA-accepted for potable water. Approved by some states for potable water under specific conditions. Check with your regulatory agency.
Chlorine High Range & pH
| Model | Method/Chemistry | Range(mg/L)* | # Tests | Prod # | Price | &nbps; | |
|---|---|---|---|---|---|---|---|
| Pocket Colorimeter II | Colorimeter/ DPD Phenol Red | 0.1-10.0 Cl2 6.0-8.5 pH |
100 | 5870012 | $412.00 |
Not recommended for regulatory reporting
* mg/L unless otherwise noted; ppb = µg/L; ppm = mg/L.; gpg = grains per gallon; 1 gpg = 17.1 mg/L or 17.1 ppm.
1 EPA-accepted for wastewater and potable water. Approved by some states for potable water under specific conditions. Check with your regulatory agency.
2 EPA-accepted for potable water. Approved by some states for potable water under specific conditions. Check with your regulatory agency.


