Reagents | DTK Water

Reagents & Calibration Solutions

Reliable water analysis starts with high-quality reagents and calibration solutions. DTK Water supplies a comprehensive range of reagents, standards and consumables for accurate, repeatable water testing in the laboratory and in the field.

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Product Details

Our range includes replacement reagents for drop test kits and photometers, conductivity standards, pH buffer solutions, Redox (ORP) solutions, titration cartridges and pool water testing tablets. Suitable for routine monitoring, calibration, process control and compliance testing, our products support water analysis across industrial, environmental, potable water, wastewater and recreational applications.

Whether you are replenishing an existing test kit, calibrating an instrument or sourcing consumables for routine testing, DTK Water provides dependable products to help maintain testing accuracy and keep your water analysis programme running smoothly.

Our Reagent Range

Drop Test Reagents

Replacement reagents for DTK Drop Test Kits, covering a wide range of water quality parameters for routine industrial, process and environmental water testing.

Photometer Reagents & Pool Water Tablets

A comprehensive range of reagent tablets, liquids and powders for Lovibond® photometers and pool water testing, supporting accurate and reliable colourimetric analysis.

Conductivity Solutions

Conductivity standards for the calibration and verification of conductivity meters, helping maintain accurate and consistent measurements during routine testing.

pH Buffer Solutions

High-quality buffer solutions for the calibration and routine verification of pH meters, available in a range of standard pH values.

Redox (ORP) Solutions

Solutions for the calibration and verification of Redox (ORP) meters, supporting reliable measurements in water treatment, industrial processes and environmental monitoring.

Titration Cartridges

Precision titration cartridges designed for accurate, repeatable measurements and straightforward replacement during routine water analysis.

Applications

Drinking Water

Boiler Water

Cooling Water Systems

Closed Water Systems

Wastewater Treatment

Process Water

Swimming Pools & Spas

Environmental Water Monitoring

Laboratory Testing

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Drop Test Kits and Reagents

Order Code	Parameter	Measuring Range	Pack Size
DTK001	Acidity	20 – 6,000 H₂SO₄	Kit
SDT001 SDT002 SDT003	PA1 - Indicator ACD2 - HR Titrant ACD3 - LR Titrant		65ml 65ml 65ml
DTK002	Alkalinity P	20 – 2,400 CaCO₃	Kit
SDT001 SDT005 SDT006	PA1 – Indicator PA2/TA2 – HR Titrant TA3 LR – Titrant		65ml 65ml 65ml
DTK003	Alkalinity M	20 – 2,400 CaCO₃	Kit
SDT004 SDT005 SDT006	TA4 – pH4.5 Indicator PA2/TA2 – HR Titrant TA3 – LR Titrant		65ml 65ml 65ml
DTK004	Alkalinity OH	20 – 2,400 CaCO₃	Kit
SDT001 SDT007 SDT005 SDT006	PA1 – Indicator PA3 – OH Reagent PA2/TA2 – HR Titrant TA3 – LR Titrant		65ml 65ml 65ml 65ml
DTK005	Alkalinity P, M & OH	20 – 2,400 CaCO₃	Kit
SDT001 SDT004 SDT007 SDT005 SDT006	PA1 – Indicator TA4 – Indicator PA3 – OH Reagent PA2/TA2 – HR Titrant TA3 – LR Titrant		65ml 65ml 65ml 65ml 65ml
DTK006	Anionics (as Sodium Lauryl Sulphate)	5 – 2,000	Kit
SDT012 SDT013 SDT014 SDT015	P1/M – Solvent P2/3 – Indicator P9 – LR Titrant P10 – HR Titrant		50ml 65ml 65ml 65ml
DTK007	Bromine (Total)	0-20 Br₂	Kit
SDT016 SDT017	TBR1 – Buffer & Indicator TBR2 – Titrant		65ml 65ml
DTK053	Chelant (Free)	0 – 240 EDTA	Kit
SDT018 SDT019 SDT020	FC1 – Buffer FC2 – Indicator FC3 – Indicator		65ml 65ml 65ml
DTK008	Chelant (Total)	0 – 240 EDTA	Kit
SDT074 SDT022	P1/4 – Buffer & Indicator Tablets CT2 – Titrant		50T 65ml
DTK009	Chloride LR & HR	5 – 3,000 Cl^–	Kit
SDT023 SDT026 SDT024	BC1/CC1 – Indicator BC2 – HR Titrant CC2 – LR Titrant		65ml 65ml 65ml
DTK010	Chlorine (FREE) LR & HR	5 – 200 Cl₂	Kit
STD027 SDT028 SDT029	FCL1 – Buffer FCL2 – LR Titrant FCL3 – HR Titrant		65ml 65ml 65ml
DTK011	Chlorine Dioxide VLR	0 – 12 ClO₂	Kit
SDT036 SDT122	CDO1 – Buffer CDO2A – VLR Titrant		65ml 65ml
DTK012	Chlorine Dioxide LR	0 – 24 ClO₂	Kit
SDT036 SDT122 SDT137	CDO1 – Buffer CDO2A – VLR Titrant CDO2 LR Titrant		65ml 65ml 65ml
DTK013	Chlorine Dioxide VLR – HR	0 – 600 ClO₂	Kit
SDT036 SDT122 SDT037 SDT038	CDO1 – Buffer CDO2A – VLR Titrant CDO2 – LR Titrant CDO3 – HR Titrant		65ml 65ml 65ml 65ml
DTK015	Calcium Hardness	0 – 1,200 CaCO₃	Kit
SDT043 SDT050 SDT049 SDT044	CH2 – Buffer CH1P – Indicator Powder H/TH4/CH3 – HR Titrant TH3 – LR Titrant		65ml 20g 65ml 65ml
DTK016	Hardness (Total)	0 – 1,200 CaCO₃	Kit
SDT046 SDT047 SDT049 SDT044	TH2 – Buffer TH5 – Indicator H/TH4/CH3 – HR Titrant TH3 – LR Titrant		65ml 65ml 65ml 65ml
DTK051	Hydrogen Peroxide LR	0 – 50 H₂O₂	Kit
STD051 SDT053	HP1 – Buffer HP3 – LR Titrant		65ml 65ml
DTK017	Hydrogen Peroxide HR	10 – 5000 H₂O₂	Kit
STD051 SDT052	HP1 – Buffer HP2 – HR Titrant		65ml 65ml
DTK054	Hydrogen Peroxide LR & HR	0 – 5000 H₂O₂	Kit
STD051 SDT052 SDT053	HP1 – Buffer HP2 – HR Titrant HP3 – LR Titrant		65ml 65ml 65ml
DTK060	Hypochlorite (Sodium)	0 – 15% NaClONaClO	Kit
SDT030 SDT031 SDT035 SDT032	CL1P – Buffer CL2A – Indicator Tablet CL5 – Titrant CL2B – Buffer		20gm 50T 65ml 10g
DTK033	Iron VHR	200 – 6000 Fe	Kit
SDT055 SDT056 SDT057 SDT058	HFE1- Buffer HFE2 – Indicator HFE3 – Buffer HFE4 – Titrant		65ml 65ml 20g 65ml
DTK018	Molybdate LR	0 to 50 MoO₄₄	Kit
255050 SDT723 SDT155	MB1- Buffer MB2 – Indicator MB3 – Titrant		65ml 5g 65ml
DTK052	Molybdate (MLB) HR	0 to 500 MoO₄	Kit
SDT440 SDT441	MLB1 – Indicator/Buffer MLB2 – Titrant		65ml 65ml
DTK020	Nitrite	10 – 2000 NaNO₂	Kit
SDT072 SDT073	N1 – Indicator N2 – Titrant		65ml 65ml
DTK021	Nitrite HR	10 – 2000 NaNO₂	Kit
SDT177 SDT178	N1HR – Buffer N2HR – Titrant		65ml 65ml
DTK045	Peracetic Acid	10 – 6000 PAA	Kit
SDT051 SDT031 SDT054 SDT032	HP1 – Buffer CL2A – Indicator CL7 – Titrant CL2B – indicator		65ml 50T 65ml 10g
DTK022	pH	0 – 14 pH	Kit
STD164	Universal pH Indicator		65ml
DTK023	Phosphonate (Short)	4 – 20 HEDP, AMP	Kit
SDT074 SDT075	P1/4 – Buffer/Indicator Tablets P5 – Titrant		50 T 65ml
DTK024	Phosphonate (Long)	4 – 20 HEDP, AMP	Kit
SDT514 SDT080 SDT291 SDT075	P1/2 – Dechlorination / Indicator Solution P3 – pH Adjuster P4L – Indicator Solution P5 – Titrant		65ml 65ml 65ml 65ml
DTK032	Phosphonate	0 – 50 PBTC	Kit
SDT351 SDT352 SDT353	PO1- Buffer PO2 – Indicator PO3 – Titrant		65ml 65ml 65ml
DTK025	Polyacrylate	2 – 10 C₃H₄O₂	Kit
SDT082 SDT083 SDT087 SDT084 SDT085 SDT086	A1 – Buffer A2 – Precipitant A3 – Solvent A4 – Indicator A5 – HR Titrant A6 – LR Titrant		65ml 65ml 50ml 65ml 65ml 65ml
DTK026	Polyamine	1 – 20 CTAB	Kit
SDT012 SDT013 SDT088	P1/M – Solvent P2/3 – Mixed Acid Indicator P4/2 – Titrant		50ml 65ml 65ml
DTK027	Quarternary Ammonium Compounds (QAC)	20 – 1,000 CTAB	Kit
SDT089 SDT090 SDT091	QA1 – Indicator QA2 – Acidifier QA3 – Titrant		65ml 65ml 65ml
DTK028	Sulphite	5 – 300 Na₂SO₃	Kit
SDT092 SDT093	S1 – Sulphite Indicator Powder S2 – Sulphite Titrant		40g 65ml
DTK080	Silver	0 – 60	Kit
SDT727 SDT728	Silver Reagent Silver Indicator		40g 65ml
DTK029	Tannin	5 – 200	Kit
SDT094 SDT095	TN1 – Buffer TN2 – Titrant		40g 65ml
DTK030	Total Oxidant	0.2 – 6 ClO₂	Kit
SDT213 SDT214 SDT215 SDT216 SDT191	TO1 – Buffer TO2 – Indicator Powder TO3 – Indicator Powder TO4 – LR Titrant TO5 – HR Titrant		65ml 40g 40g 65ml 65ml
DTK031	Zinc	0 – 2 Zn	Kit
SDT096 SDT101 SDT097	Z1 – Dechlorination Solution Z4T – Buffer / Inidcator Tablet Z5 – Titrant		65ml 50T 65ml

Note: Ranges vary and are dependant on the sample size used to carryout the test, for more information please read the instructions.

Tablet Reagents

Order Code	Descriptions
SDT045	Acidifying GP Tablets
SDT673	Acidifying PT Rapid Tablets
SDT414	Acidifying PT Tablets
SDT714	Acidifying SE Tablets
SDT342	Alka M Photometer Tablets
SDT538	Alka P Tablets
SDT857	Alkalinity M HR Photometer Tablet
SDT478	Alkalinity M T/C Tablets
501531	Alkalinity M Tablets Bottle
SDT535	Alkalinity P T/C Tablets
SDT740	Alkalinity P Tablets
501521	Alkalinity P Tablets Bottle
515321BT	Alkalinity Total M Tablets, Tablet Count
515101	Alkalinity-P Tablets
513230BT	Alka-P Phometer Tablets
515570BT	Alk-Test Tablet
SDT147	Aluminium No.1 Tablets
SDT148	Aluminium No.2 Tablets
517601BT	Aluminium No1 & No2 Tablets Combi Pack
SDT042	Amine Test Tablets
SDT245	Ammonia No.1 Tablets
SDT244	Ammonia No.2 Tablets
SDT184	Ammonium Persulphate Tablets
SDT868	Bromocresol Purple Tablet
511641BT	Bromothymol Blue Tablet
2418328	BSB / BOD CM Calibration Test Tablets
515600BT	Buffer pH 10 Tablets
515611BT	Buffer pH 7 Tablets
515620BT	Buffer pH 4 Tablets
515650BT	Calcheck Tablets
517761BT	Calcium Hardness Calcio No1 & No2 Tablets Combi Pack
SDT802	Calcium Hardness No.1 Photometer Tablets
SDT803	Calcium Hardness No.2 Photometer Tablets
SDT529	Calcium Hardness Photometer Tablets
SDT494	Calcium Hardness T/C Tablets
SDT105	CH1T - Calcium Hardness Indicator
517741BT	Chloride 0.5 - 25 mg/L
SDT510	Chloride T/C Tablets
SDT591	Chloride T1 Tablets
SDT592	Chloride T2 Tablets
SDT374	Chloride Tablets
502461	Chloride Tablets, Tablet Count Method in Bottle
SDT426B	Chlorine Dioxide Buffer Tablets
SDT426A	Chlorine Dioxide LR Tablets
517721BT	Chlorine HR (KI) & Acidifying GP Tablet set
SDT221	Chlorine HR Tablets
517711BT	Chlorine Reagent Pack DPD No.1 & No.3
SDT141	Chlorocol Tablets
SDT031	Indicator Tablets
SDT025	Cleaning Acid Strength Tablets
505420	Cleaning Acid Strength Tablets in Bottle
SDT801	Copper LR [Kamco] Tablets
517691BT	Copper No.1 & No.2 Tablets Combi Pack
SDT240	Copper No.1 Tablets
SDT239	Copper No.2 Tablets
SDT203	Copper/Zinc HR Tablets
SDT149	Copper/Zinc LR Tablets
SDT678	CyA Test Tablets
SDT206	Dechlor Tablets
SDT246	DEHA Test Tablets
511050BT	DPD 1 Comparator / Potometerr Tablets
511310BT	DPD 1 Rapid Dissolve Tablets BT
511080BT	DPD 3 Comparator / Potometerr Tablets
511290BT	DPD 3 Rapid Dissolve Tablets BT
SDT443	DPD Acidifying Tablets
SDT146	DPD Glycine Tablets
SDT392	DPD Neutralising Tablets
SDT131	DPD Nitrite Tablets
502691	DPD Nitrite Tablets Bottle
SDT824	DPD No 1 HR Tablets
511220BT	DPD No 4 Tablets
515741BT	DPD No. 1 High Calcium
SDT861	DPD No. 3 HR Tablets
SDT824	DPD No.1 High Range Tablets
SDT533	DPD No.1 Rapid Tablets
SDT106	DPD No.1 Tablets
SDT492	DPD No.2 Tablets
511420BT	DPD No.3 Evo Tablets (Low Iodide)
511590BT	DPD No.3 High Range Tablets
511291BT	DPD No.3 Rapid Tablets
SDT107	DPD No.3 Tablets
SDT248	DPD No.4 Tablets
SDT824	DPD No1 HR Tablets
SDT789	DPD No4 Rapid Dissolving Tablets
SDT205	EDTA Tablets
SDT995	ExTab Tablets
SDT252	Fast Chlor Tablets
512170BT	Glycine Tablets
SDT593	Hardcheck P Photometer Tablets
SDT480	Hardicol No1 & No2 Tablets
SDT856	Hardness Low Range BW Tablets
SDT530	Hardness Total T/C Tablets
515361BT	Hardness Yes/No Tablets
503541	Hardness Yes/No Tablets, Bottle
SDT413	Hydrogen Peroxide HR Tablets
SDT500	Hydrogen Peroxide LR Tablets
SDT230	Iron HR Tablets
SDT117	Iron LR Tablets
SDT633A	Lovibond Calcio-H Calcium Hardness No 1 Tablets
SDT633B	Lovibond Calcio-H Calcium Hardness No 2 Tablets
SDT633	Lovibond Calcio-H No1 & No 2 Tablets, Combi Pack
SDT908	Lovibond Universal pH Tablets
SDT349	Manganese LR No.1 Tablets
SDT350	Manganese LR No.2 Tablets
SDT115	Molybdate No.1 HR Tablets
SDT116	Molybdate No.2 HR Tablets
517631BT	Molybdate No1 & No2 Tablets Combi Pack
SDT176	Nitrate Test Tablets
SDT144	Nitrite LR Photometer Tablets
SDT536	NItrite No.1 T/C Tablets
SDT373	Nitrite No.1 Tablets
SDT537	Nitrite No.2 T/C Tablets
SDT151	Organo-Phosphonate No.1 Tablets
SDT791	Organophosphonate OP Tablet Set
SDT074	P1/4 - Indicator Tablets
SDT922	Permanganate Value (PV) Test Reagent Set (Excepted Quant)
SDT713	Permanganate Value Tablets
511750BT	Phenol Red Comparator Tablets
SDT243	Phenol Red Rapid Dissolving Tablets
511770BT	Phenol Red Tablets
SDT616	PHMB Tablets
515810BT	Phosphate H.R.P1 Tablets
511980BT	Phosphate HR Comp.Tablets
517661	Phosphate HR No1 & No2 Tablets Combi Pack
SDT521	Phosphate HR P1 Tablets
SDT522	Phosphate HR P2 Tablets
SDT163	Phosphate HR Tablets
SDT225	Phosphate LR No.1 Tablets
SDT226	Phosphate LR No.2 Tablets
517651BT	Phosphate LR No1 & No2 Combi Pack
SDT730	Phosphate SR Tablets
SDT546	Potassium Iodide Tablets 0.1g
515670BT	Potassium T Tablets
515400	QAC HR Tablets
517671BT	Set Silica No.1 / No.2 Tablets
SDT195	Silica No1 Tablets
SDT201	Silica No2 Tablets
SDT156	Silica PR Tablets
SDT612	Sulphate No1 Tablets
SDT613	Sulphate No2 Tablets
SDT812	Sulphate Photometer Tablets
SDT365	Sulphate Tablets
515450BT	Sulphate Turbidity Tablets
SDT617	Sulphide No 1 Tablets
SDT618	Sulphide No 2 Tablets
SDT698	Sulphite HR No2 T/C Tablets
SDT1072	Sulphite LR Tablets
SDT434	Sulphite No1 T/C Tablets
SDT159	Tannin No.1 Tablets
SDT160	Tannin No.2 Tablets
SDT104	TH1T - Total Hardness Indicator
511650	Thymol Blue Tablets
505321	Total Alkalinity Tablet Count, Bottle
515161BT	Total Hardness Tablet Count Tablets
503551	Total Hardness Tablets, Tablet Count, Bottle
SDT710	Universal pH Tablets
516110BT	Urea Pretreat Tablets
535560	VARIO Total Nitrogen HR Set
535550	VARIO Total Nitrogen LR Set
SDT121	Yes/No Hardness Tablets
SDT101	Z4/T - Indicator Tablets

Note: Various tablet pack sizes are available, please ask your DTK Water representative for more details.

Conductivity Standard Solutions

Order Code	Descriptions
SDT232	84 µS Conductivity Standard
SDT217	100 µS Conductivity Standard
SDT120	500 µS Conductivity Standard
SDT109	1413 µS Conductivity Standard
SDT209	2000 µS Conductivity Standard
SDT153	5000 µS Conductivity Standard
SDT218	6440 µS Conductivity Standard
SDT154	12880 µS Conductivity Standard

Note: Various bottle sizes available 65ml, 100ml, 250ml, 500ml & 1000ml

pH Buffer Solutions

Order Code	Descriptions
SDT119	pH 4 Buffer Solution
SDT118	pH 7 Buffer Solution
SDT161	pH 10 Buffer Solution

Note: Various bottle sizes available 65ml, 100ml, 250ml, 500ml & 1000ml

Note: Other ranges are available, please ask your DTK Water representative for more details.

Redox (ORP) Solutions

Order Code	Descriptions
SDT347	Redox Standard 250 mV
SDT448	Redox Standard 465 mV
SDT223	Redox Standard 475 mV
SDT469	Probe Cleaning Solution
SDT470	Probe Rinsing Solution
SDT471	Probe Storing Solution

Note: Various bottle sizes available 65ml, 100ml, 250ml, 500ml & 1000ml

Titration Gun Reagents

Order Code	Descriptions
CART002	Alkalinity Cartridge 20ml (0 – 2000 ppm)
CART003	Chloride Cartridge 20ml (0 – 2000 ppm)
CART007	Hardness HR Cartridge 20ml (0 – 2000 ppm)
CART009	Nitrite Cartridge 20ml (0 – 2000 ppm)
CART004	Phosphonate Cartridge 20ml (0 – 50 ppm)
CART005	Sulphite Cartridge 20ml (0 – 150 ppm)
CART008	Zinc Cartridge 20ml (0 – 10 ppm)

Note: Ranges vary and are dependant on the sample size used to carryout the test, for more information please read the instructions.