DPD No. 4

For the determination of total chlorine or ozone

Green Chemistry without boric acid
Highest accuracy of test results
Easy handling & application
Exact dosing & enormous shelf life

DPD No.4 is used as an indicator for pool hygiene. As part of the DPD method, it is used to determine the total chlorine content. The tablet is dissolved in the water sample. The measurement is then taken immediately. DPD No.4 can also be used for the determination of ozone.

Part Number 511221BT

250 pc.

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Product information

Parameter and Range	Method No.	Instrument Type
Chlorine 10 T 0.1 - 6 mg/L Cl₂	M98	Spectrophotometer XD 7000 (VIS) Spectrophotometer XD 7500 (UV-VIS) XD Spectrophotometers
Chlorine 50 T 0.02 - 0.5 mg/L Cl₂ ^a)	M99	Spectrophotometer XD 7000 (VIS) Spectrophotometer XD 7500 (UV-VIS) XD Spectrophotometers
Chlorine D55 T 0.02 - 0.3 mg/L Cl₂ ^*	M2509	CHECKIT^® Comparator Chlorine DPD, tablet reagents Testpak Chlorine DPD
Chlorine T 0.1 - 1.0 mg/L Cl₂	M3018	AF 112 A Chlorine AF 112 N/T Chlorine AF 116 A Chlorine AF 118 S Chlorine AF 270 Mini Lab Pool Water AF 358 Sewage and Domestic Effluents Comparator 2000+
Chlorine T 0.01 - 6.0 mg/L Cl₂ ^a)	M100	MD 100 Chlorine, Bromine, pH, Cyanuric acid, Alkalinity-m, Calcium hardness, tablet reagents (OTZ) MD 100 Chlorine, liquid reagents MD 100 Chlorine, pH, Alkalinity-m, liquid reagents for Chlorine and pH (OTZ) MD 100 Chlorine, pH, Alkalinity-m, tablet reagents (OTZ) MD 100 Chlorine, pH, Cyanuric acid, Alkalinity-m, Calcium hardness, tablet reagents (OTZ) MD 100 Chlorine, pH, Cyanuric acid, Alkalinity-m, liquid reagents for Chlorine and pH (OTZ) MD 100 Chlorine, pH, Cyanuric acid, Alkalinity-m, tablet reagents (OTZ) MD 100 Chlorine, pH, Cyanuric acid, liquid reagents for Chlorine and pH (OTZ) MD 100 Chlorine, pH, Cyanuric acid, tablet reagents (OTZ) MD 100 Chlorine, pH, liquid reagents (OTZ) MD 100 Chlorine, pH, tablet reagents (OTZ) MD 100 Chlorine, tablet reagents MD 100 Chlorine DUO, Chlorine HR, pH, Alkalinity-m, Calcium hardness (OTZ) MD 100 Chlorine DUO, powder reagents MD 100 Chlorine DUO, tablet reagents MD 100 Chlorine LR, Chlorine HR, Chlorine dioxide, tablet reagents MD 100 Cooling Water MD 110 Chlorine, Bromine, pH, Cyanuric acid, Alkalinity-m, Calcium hardness, tablet reagents MD 110 Chlorine, pH, Cyanuric acid, Alkalinity-m, liquid reagents MD 110 Chlorine, pH, Cyanuric acid, Alkalinity-m, tablet reagents MD 110 Chlorine, pH, Cyanuric acid, liquid reagents MD 110 Chlorine, pH, Cyanuric acid, tablet reagents MD 110 Cooling Water MD 200 Chlorine, Bromine, pH, Cyanuric acid, Acid capacity KS4.3, Calcium hardness, tablet reagents (OTZ) MD 200 Chlorine, Bromine, pH, Cyanuric acid, Alkalinity-m, Calcium hardness, tablet reagents (OTZ) MD 200 Chlorine, Chlorine dioxide, pH, Acid capacity KS4.3, tablet reagents (OTZ) MD 200 Chlorine, pH, Acid capacity KS4.3, liquid reagents for Chlorine and pH (OTZ) MD 200 Chlorine, pH, Acid capacity KS4.3, tablet reagents (OTZ) MD 200 Chlorine, pH, Acid capacity KS4.3, Urea, tablet reagents (OTZ) MD 200 Chlorine, pH, Alkalinity-m, liquid reagents for Chlorine and pH (OTZ) MD 200 Chlorine, pH, Alkalinity-m, tablet reagents (OTZ) MD 200 Chlorine, pH, Bromine, tablet reagents (OTZ) MD 200 Chlorine, pH, Cyanuric acid, Acid capacity KS4.3, Calcium hardness, tablet reagents (OTZ) MD 200 Chlorine, pH, Cyanuric acid, Acid capacity KS4.3, liquid reagents for Chlorine and pH (OTZ) MD 200 Chlorine, pH, Cyanuric acid, Acid capacity KS4.3, tablet reagents (OTZ) MD 200 Chlorine, pH, Cyanuric acid, Alkalinity-m, Calcium hardness, tablet reagents (OTZ) MD 200 Chlorine, pH, Cyanuric acid, Alkalinity-m, Copper, Iron, tablet reagents (OTZ) MD 200 Chlorine, pH, Cyanuric acid, Alkalinity-m, liquid reagents for Chlorine and pH (OTZ) MD 200 Chlorine, pH, Cyanuric acid, Alkalinity-m, tablet reagents (OTZ) MD 200 Chlorine, pH, Cyanuric acid, liquid reagents for Chlorine and pH (OTZ) MD 200 Chlorine, pH, Cyanuric acid, tablet reagents (OTZ) MD 200 Chlorine, pH, liquid reagents (OTZ) MD 200 Chlorine, pH, tablet reagents (OTZ) MD 600 MD 600 Photometer Series MD 610 MD 640 MultiDirect MultiDirect, with battery MultiDirect, without battery PM 600 PM 620 PM 630 Water Safety Kit Chemical Water Treatment Engineers Test Kit (advanced) Water Treatment Engineers Test Kit (Photometer)
mg/L Cl₂
Oxygen active T 0.1 - 10 mg/L O₂	M290	MD 600 MD 600 Photometer Series MD 610 MD 640 MultiDirect MultiDirect, with battery MultiDirect, without battery PM 620 PM 630
Ozone in presence of chlorine T 0 - 1 mg/L O₃	M2531	CHECKIT^® Comparator Ozone (DPD), in presence of chlorine, tablet reagents Testpak Ozone (DPD), in presence of chlorine
Ozone T 0 - 1 mg/L O₃	M2532	CHECKIT^® Comparator Ozone (DPD), tablet reagents Testpak Ozone (DPD)
Ozone T 0.01 - 0.1 mg/L O₃	M3074	Comparator 2000+ Ozone 3/67/0.01-0.1 mg/l
Ozone T 0.1 - 1.0 mg/L O₃	M3073	Comparator 2000+ Ozone 3/67/0.1-1.0 mg/l Kit
Ozone T 0.05 - 0.45 mg/L O₃	M3075	Comparator 2000+

Title	Online Download Type	Format
Instruction Manual CHECKIT Comparator D55 Chlorine free, combined, total (Method No.: M2509)	Instruction Manual	PDF (0.47 MB)
Instruction Manual CHECKIT Comparator Ozone (also in the presence of Chlorine) (Method No.: M2531)	Instruction Manual	PDF (0.45 MB)
Instruction Manual CHECKIT Comparator Ozone (Method No.: M2532)	Instruction Manual	PDF (0.37 MB)
Instruction Manual Comparator Colour Disc - Chlorine 3 (Method No.: M3014, M3015, M3016, M3018, M3020, M3021, M3022, M3023, M3024, M3025, M3026, M3031, M3034, M3035, M3036, M3037, M3114)	Instruction Manual	PDF (0.05 MB)
Instruction Manual Comparator Colour Disc - Chlorine 1 (Method No.: M3019)	Instruction Manual	PDF (0.03 MB)
Instruction Manual Comparator Colour Disc (Method No.: M3073, M3074, M3075)	Instruction Manual	PDF (0.04 MB)
Instruction Manual Comparator Colour Disc - Chlorine L (Method No.: M3115, M3116, M3117, M3118, M3119, M3120, M3121, M3122, M3123)	Instruction Manual	PDF (0.03 MB)
Instruction Manual Single Method M98 - Chlorine 10 T	Procedure Single Method	PDF (3.97 MB)
Instruction Manual Single Method M99 - Chlorine 50 T	Procedure Single Method	PDF (3.94 MB)
Instruction Manual Single Method M100 - Chlorine T	Procedure Single Method	PDF (3.49 MB)
Instruction Manual Single Method M290 - Oxygen active T	Procedure Single Method	PDF (3.01 MB)
Validation Data DPD No.1 Free Chlorine	Validation Data	PDF (0.12 MB)

Title	SDS Country	Direct Download
DPD No. 4 from Lot Code YA2A0227