Code
Price
Code
Price
Code
Price
Code
Price
Code
Price
Code
Price
Code
Price
Code
Price
② Hanna Free Chlorine Meter Reagent
③ ﾊ4直Ａ
⑥ があります。この結合残留塩素にはあまり有
⑦ アや有機性窒素化合物などと結合した塩素）
④ HI93711-01 100 tests 6-0793-04017354600 ⑤HI93711-03 300 tests 6-0793-05017354700
② HI93701-01 100 tests 6-0793-02017354400 Hanna Total Chlorine Meter Reagent
⑥ Glass Container for Residual Chlorine Meter Sample Collection (4 pcs) Total Chlorine Reagent
⑩ Hanna HI93701-TJ Total Chlorine Reagent
⑨ Hanna HI93701-FJ Free Chlorine Reagent
① Hanna Residual Chlorine Meter (with carrying case)
Skimmer Ladle
Storage Container
Catering
Scale
Thermometer
Timer
Concentration Meter & More
Strainer
Cafeteria Spatula
Stock Pot
Transport
Capacity
● Prices are as of April 1, 2026, excluding tax. ● Prices and specifications subject to change without notice.
When ordering,
Please include the page, number, and product code.
Residual Chlorine Meter
Eliminate troublesome residual chlorine management with this device
Chlorine is one of the parameters that must be managed most strictly from economic and safety perspectives
Chlorine is widely used for sterilization and disinfection in drinking water, wastewater, swimming pools, industrial equipment, cooling towers, and more.
Nearly all facilities have residual chlorine standards, requiring rigorous residual chlorine management
Hanna's residual chlorine meters use DPD reagent and detect down to 0.01 ppm. Simplify residual chlorine management —
one unit does it all. Comes with a plastic carrying case ideal for portability and storage, at a surprisingly low price.
Color Comparison Plate — superior alternative to carcinogenic o-tolidine.
Set without Reagent
Set with Reagent
Measurement Method
DPD Method
Measurement Range
Standard Color Comparison Plate
Residual Chlorine Meter (12-Stage Color Comparison Included) × 1 Unit
Square Test Tubes with Silicon Caps × 3
Vinyl Case × 1
Residual Chlorine Meter (12-Stage Color Comparison Included) × 1 Unit
Square Test Tubes with Silicon Caps × 3
Vinyl Case × 1
DPD Powder Reagent 100 Tests × 1 Box
Body / 67×37×H156mm Vinyl Case / 97×50×H170mm
0.3kg (including case)
⑧Residual Chlorine Tester DPD Method
Replacement Vinyl Case
DPD Method Powder Reagent (100 Tests)
DPD Method Powder Reagent Economy (500 Tests)
DPD Method Resin Comparison Plate
DPD Method Potassium Iodide Powder Reagent (100 tests)6-0793-08083875680
● DPD reagent is a powder reagent in single-use packets. Available in standard 100-test and economy 500-test sizes.
● DPD reagent contains pH buffer, allowing adjustment of test solution pH for stable color measurement. (Stable measurement possible with pH 3–10 test water)
● When used with optional potassium iodide reagent, total residual chlorine can be measured, distinguishing total residual chlorine concentration from free
Combined chlorine concentration can be determined from the difference with total residual chlorine.
③HI93701-03 300 uses 6-0793-03 017354500
DPD (N,N-diethyl-p-phenylenediamine) method for residual chlorine measurement
Residual chlorine refers to the combined free and combined residual chlorine that must be present in tap water. It refers to chlorine compounds capable of effectively sterilizing and oxidizing substances in the water. When DPD reagent is added to water containing residual chlorine, the solution turns pale
in proportion to the residual chlorine level.
Based on a reaction that produces a red-purple to magenta color.
Residual Chlorine Meter HI 97701C measures free residual chlorine only,
while HI 97711C measures both free residual chlorine
and total chlorine.
There are two measurement options: free residual chlorine only, or
total chlorine (combined free residual and bound chlorine).
However, the Water Supply Law requires that water
from taps maintain free residual chlorine of
0.1 ppm or higher through chlorine disinfection.
Residual chlorine refers to effective chlorine (chlorine with oxidizing power) remaining in water
as a result of chlorine treatment.
is measured. There are two types of residual chlorine: one
is free residual chlorine (hypochlorous acid HClO and
hypochlorite ion ClO
−). In general, measurement of this
chlorine concentration is particularly important for sanitation management.
The other is combined residual chlorine (ammonia
has no effective sterilizing power. The two types of residual
chlorine (free residual chlorine and combined chlorine) combined are called
total chlorine.
(Tablets 300 tests + 1 liquid bottle) ■
(Tablets 500 tests)
※Daily water-resistant coating
Accessories: Main unit, glass cell for measurement & 2 cap sets, 1 validator set, cell surface cleaning cloth,
Free chlorine powder reagent 50 tests, 1.5V AA alkaline batteries 3 pieces, hard carrying case,
Japanese instruction manual and more
Model No.
Measurement Range
Free Chlorine
Total Chlorine
0.01ppm (for 0.00–3.50ppm)
0.10ppm (for 3.50ppm and above)
±0.03mg/L ±3% of measured value
Silicon Photocell
DPD (Reagents sold separately)
External Environmental Conditions
0–50°C (relative humidity ≤100%)
Three 1.5V AA alkaline batteries
After 15 minutes of non-use
HI97701C Free Chlorine
HI97711C Free/Total Chlorine 6-0793-01027354321
Power
Power