Metal/Complex Indicators by Merck: Accurate Analysis for Metal Ion Determination & Water Hardness Testing
Accurate detection of metal ions is essential across analytical laboratories and industrial applications. Metal/complex indicators from Merck and leading brands deliver precise color changes during complexometric titrations, crucial for measuring metal ion concentrations or water hardness. Explore a complete range of indicators designed to meet industry demands.
Why Choose Metal and Complex Indicators
- Clear endpoint recognition: Supports detection of the endpoint in complexometric titrations for more confident analytical work.
- Reliable metal ion determination: Enables volumetric analytical determination of metal ion concentration in laboratory testing.
- Useful for routine water analysis: Supports determination of water hardness as a common analytical application.
- Suitable for metal ion titration workflows: Provides practical value in analytical procedures that require metal indicators for complexometric titrations.
What Metal and Complex Indicators Are
- Product definition: Metal complex indicators are organic materials used as indicators for metal ions.
- Complex formation: These indicators are capable of forming colored complexes with metal ions.
- Color behavior: The free indicator has a different color from the complexed form.
- Indicator role: They are used as metal indicators that form complexes with metal ions which differ in color from the indicator itself.
- Selection characteristics: The reagent properties must be suited to the sensitivity and the acid-base characteristics of the indicator.
Applications and Usage
- Volumetric analytical determination of metal ion concentration: Used in the volumetric analytical determination of the concentration of metal ions.
- Complexometric titrations: Used for detection of the endpoint of a complexometric titration by using metal indicators that form complexes with metal ions and differ in color from the indicators themselves.
- Water hardness determination: Applied in the determination of water hardness, a common use of metal/complex indicators.
Metal and Complex Indicator Product List
| Product |
|---|
| Arsenazo III metal indicator |
| Aurin tricarboxylic acid ammonium salt GR for analysis (reagent for aluminium) ACS |
| Calcein indicator for metal determination |
| Calcon (C.I. 15705) metal indicator |
| Calconcarboxylic acid metal indicator |
| Calmagite, indicator grade |
| Cupferron 97%, reagent grade |
| 1,8-Dihydroxy-2-(4-sulfophenylazo)naphthalene-3,6- disulfonic acid trisodium salt |
| 3,3′-Dimethylnaphthidine |
| 1,5-Diphenylcarbazide GR for analysis and redox indicator Reag. Ph Eur |
| 1,5-Diphenylcarbazone (cont. 50 % Diphenylcarbazid) ACS, Reag. Ph Eur |
| Dithizone for analysis (1,5-Diphenylthiocarbazone) Reag. Ph Eur |
| Eriochrome black T (C.I. 14645) indicator for complexometry ACS, Reag. Ph Eur |
| Eriochrome blue-black B (C.I. 14640) metal indicator |
| Eriochrome cyanine R (C.I. 43820) for analysis (reagent for aluminium) |
| Hematoxylin |
| Hematoxylin cryst. (C.I. 75290) for microscopy |
| Hydroxynaphthol blue metal (pM) indicator |
| Indicator buffer tablets for the determination of water hardness with titriplex solutions |
| Magnesium reagent acc. to Mann and Yoe (reagent for magnesium) |
| Methylthymol blue sodium salt metal indicator |
| Murexide (Ammonium purpurate) metal indicator ACS |
| Naphthol green B (C.I. 10020) indicator |
| Phenylhydrazinium chloride for analysis |
| Phthalein purple metal indicator Reag. Ph Eur |
| 3,5-Pyrocatecholdisulfonic acid disodium salt monohydrate (Tiron) metal indicator |
| 1-(2-Pyridylazo)-2-naphthol (PAN) metal indicator Reag. Ph Eur |
| 4-(2-Pyridylazo)resorcinol monosodium salt monohydrate metal indicator Reag. Ph Eur |
| Pyrogallol red metal indicator |
| 8-Quinolinol puriss. p.a., ACS reagent |
| Thorin indicator for sulfate titration |
| Titan yellow (C.I. 19540) indicator Reag. Ph Eur |
| Xylenol orange tetrasodium salt metal indicator ACS, Reag. Ph Eur |
With over 23 years of expertise, Chemical Express is the official distributor of Merck and other trusted brands in Thailand. Access a diverse range of metal/complex indicators and related products for your analytical needs through Chemical Express today.
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