Products / Environmental and Industrial
Lovibond® Checkit Comparator — Single & Multiparameter Test Kits
Checkit Comparator — Comparator Disc Water Testing
Description
- Compact, one-piece housing with no moving parts to lose or break — the colour disc simply clicks into place and you're ready to test.
- Covers a wide range of parameters, many with multiple testing ranges and methods; new parameters can be added at any time via additional discs and reagents, using the same comparator body
- Continuous colour gradient on each disc gives a direct colour match against the sample — no need to interpolate between fixed standards
- Diffuser panel behind the results window spreads light evenly across the sample and blank tubes, helping achieve an accurate match and compensate for turbidity
- Clear, multilingual step-by-step instructions mean even non-chemists can get reliable, repeatable results quickly
- Tablet reagents carry a guaranteed shelf life of 5–10 years
Ready to order or need more information?
Available Models — Test Methods & Measuring Ranges
PARAMETER | Model / Part No. | Test Method | Measuring Range |
|---|---|---|---|
Alkalinity-m | WL147450 | Total Alkanity Tablets | 20 - 240 mg/L CaCO₃ |
Aluminium | WL147200 | Aluminium No1/No2 Tablets | 0 - 0.3 mg/L Al |
Ammonia | WL147200 | Ammonia No1/No2 Tablets | 0–1 mg/L N |
Bromine | WL147280 | DPD No1/Glycine Tablets | 0–5 mg/L Br₂ |
Chlorine | WL147000 | DPD, free/combined/total** | 0.02–0.3 mg/L Cl₂ |
Chlorine | WL147010 | DPD, free/combined/total | 0–1 mg/L Cl₂ |
Chlorine | WL147040 | DPD, free/combined/total | 0–2 mg/L Cl₂ |
Chlorine | WL147020 | DPD, free/combined/total | 0–4 mg/L Cl₂ |
Chlorine KI | WL147030 | Chlorine HR (KI), total only | 10–300 mg/L Cl₂ |
Chlorine dioxide | WL147330 | DPD No1/Glycine Tablets** | 0.01–0.2 mg/L ClO₂ |
Copper, free | WL147230 | Copper/Zinc LR Tablets | 0–1 mg/L Cu |
Copper HR | WL147430 | Copper No1/No2 Tablets
Free + total | 0–5 mg/L Cu |
Copper LR** | WL147440 | Copper No1/No2 Tablets Free + total | 0–1 mg/L Cu |
DEHA | WL147370 | DEHA Tablets/Deha Solution | 0-0.5 mg/L DEHA |
Fluoride | WL147890 (Testpak) | SPADNS Reagent Solution | 0.2–2 mg/L F⁻ |
Iron HR | WL147320 | Iron HR Tablets | 0–10 mg/L Fe |
Iron LR | WL147220 | Iron LR (Fe (II) & FE (III) Tablets | 0.05–1 mg/L Fe |
Molybdate LR** | WL147291 | Molybdate No1/No2 HR Tablets | 0–10 mg/L MoO₄ |
Molybdate HR | WL147290 | Molybdate No1/No2 HR Tablets | 0–100 mg/L MoO₄ |
Molybdate HR | WL147295 | Molybdate No1/No2 HR Tablets | 50–500 mg/L MoO₄ |
Nitrate LR | WL147810 (TestPak) | Nitrite LR tablets
Nitrate - Test Tablets
Nitrate Test Powder
Nitrate Test Tube | 0–1 mg/L NO₃ |
Nitrite LR | WL147300 | Nitrite LR Tablets | 0–0.5 mg/L N |
Ozone | WL147270 | DPD No4 Tablets
Glycine Tablets
(in presensce of chlorine) | 0–1.0 mg/L O₃ |
Ozone | WL147275 | DPD NO4 Tablets | 0–1.0 mg/L O₃ |
pH value | WL147100 | Phenol Red Rapid Tablets | 6.5–8.4 pH |
pH value | WL147110 | Bromocresol Purple Tablets | 5.2–6.8 pH |
pH value | WL147120 | Bromothymol Blue Tablets | 6.0–7.6 pH |
pH value | WL147130 | Universal pH Tablets | 4–10 pH |
Phosphate LR | WL147240 | Phosphate No1/No2 Tablets | 0–4 mg/L PO₄ |
Phosphate HR | WL147250 | Phosphate HR Tablets | 0–80 mg/L PO₄ |
Silica LR | WL147350 | Silica No1/No2 Tablets | 0.25–4 mg/L SiO₂ |
Silica VLR** | WL147360 | Silica No1/No2 Tablets | 0–1 mg/L SiO₂ |
Sodium hypochlorite | WL147490 | Chlorine HR (KI) Tablets
Acidifying GP Tablets | 2–18 % |
Sulfite LR | WL147380 | Sulfite LR Tablets | 0.5–10 mg/L SO₃ |
Zinc LR | WL147340 | Copper/Zinc LR Tablets
EDTA Tablets
Dechlor Tablets | 0–1 mg/L Zn |
** Only with Checkit Comparator D55 with mirror optics (pathlength 55mm). The TestPaks contain the required colour discs, reagents and cuvettes without the comparators. Checkit Comparator Code WL145000, Checkit Comparator D55, Code WL145010.
Need replacement reagents, tablets, or a different pack size? Contact us and we'll help you find the right consumables for your kit.
Available Models — Test Methods & Measuring Ranges
VARIO SINGLE PARAMETER KIT | Model / Part No. | Test Method | Measuring Range |
|---|---|---|---|
Ammonium | WL147211 | Vario Ammonia Powder Packs | 0–0.5 mg/L N |
Chlorine, free | WL147050 | Vario DPD Free Powder Packs | 0–3.5 mg/L Cl₂ |
Chlorine, total | WL147051 | Vario Total Powder Packs | 0–3.5 mg/L Cl₂ |
Chlorine, free + total | WL147052 | Vario Free & Total Powder Packs | 0–3.5 mg/L Cl₂ |
Copper HR, free | WL147431 | Vario Copper Vario HR Powder Packs | 0–5 mg/L Cu |
Copper LR**, free | WL147441 | Vario Copper Vario HR Powder Packs | 0–1 mg/L Cu |
Iron | WL147470 | Vario Iron TPTZ Powder Packs | 0–1.8 mg/L Fe |
Manganese LR | WL147910 (Testpak) | Vario Manganese Reagent Set (Testpak only) | 0.1–0.7 mg/L Mn |
Manganese VLR** | WL147920 (Testpak) | Vario Manganese Reagent Set (Testpak only) | 0.02–0.2 mg/L Mn |
Nitrite | WL147301 (Testpak) | Vario Nitri 3 Powder Pack (Testpak only) | 0–0.3 mg/L N |
Phosphate | WL147480 | Vario Phos 3 Powder Packs | 0–2.5 mg/L PO₄ |
Silica HR | WL147351 | Vario Silica Powder Pack Set | 0–100 mg/L SiO₂ |
** Only with Checkit Comparator D55 with mirror optics (pathlength 55mm). The TestPaks contain the required colour discs, reagents and cuvettes without the comparators. Checkit Comparator Code WL145000, Checkit Comparator D55, Code WL145010.
Multiparameter Test Kits
2 in 1 Test Kits | Model / Part No. |
|---|---|
Chlorine 0–1.0 mg/L Cl₂ / pH value 6.5–8.4 pH | WL147016 |
Chlorine 0.1–2.0 mg/L Cl₂ / pH value 6.5–8.4 pH | WL147046 |
Chlorine 0–4.0 mg/L Cl₂ / pH value 6.5–8.4 pH | WL147026 |
Bromine 0–5.0 mg/L Br₂ / pH value 6.5–8.4 pH | WL147285 |
Copper 0–1.0 mg/L Cu / pH value 6.5–8.4 pH | WL147235 |
5 in 1 Water Balance Test Kit | Model / Part No. |
|---|---|
Chlorine 0–4.0 mg/L Cl₂ / pH value 6.5–8.4 pH / Cyanuric acid 20–200 mg/L Cys / Calcium hardness 20–800 mg/L CaCO₃ / Total Alkalinity 20–800 mg/L CaCO₃ | WL147028 |
Need replacement reagents, tablets, or a different pack size? Contact us and we'll help you find the right consumables for your kit.
Need technical advice or a quote?
Our team has over 35 years of Lovibond experience. Contact us for pricing, availability, and support.