Precise water analysis – directly on site

The WINLAB Data Line photometer is a powerful, portable fourth-generation LED photometer developed specifically for water analysis in the field and in the laboratory. It is the ideal complement to the photometric CALDUR® test sets and enables an objective, digital evaluation of water samples – without subjective colour comparisons.

With nine LED wavelengths (380, 430, 470, 500, 520, 560, 610, 700 and 810 nm), the photometer covers a wide spectral range and is therefore suitable for a large number of water parameters.

Which parameters can be measured?

In combination with the CALDUR® test sets, you can determine the following parameters photometrically, among others:

• Disinfection & oxidation: chlorine (free), chlorine LR/HR (free + combined), chlorine dioxide, peroxide
• Metals: aluminium, iron (LR, LRS, HRS), chromium, copper, manganese, molybdenum
• Nutrients: ammonium, nitrate, nitrite, phosphate (LR/HR), silicate
• Organic substances: DEHA (diethylhydroxylamine), ascorbic acid, MEKO
• Others: chloride HR, sulfide, sulfite

In total, over 100 pre-programmed measuring methods are available – in addition to CALDUR®, also for reagents from other manufacturers.

What makes the WINLAB Data Line special?

• Automatic concentration determination with pre-programmed calibration curves

  No manual reading from a colour chart – the photometer calculates the value digitally and reliably

• Large, backlit graphic display (128 × 64 pixels) with mineral glass cover

  Readings are clearly legible even in difficult lighting conditions – scratch-resistant and robust

• Memory for up to 150 calibration curves and 1,000 measurement records

  Extensive documentation directly on the device – ideal for logging and quality assurance

• Reagent instructions readable directly from the display

  No searching through paper manuals – step-by-step instructions always at hand

• Waterproof housing with protected cuvette compartment

  Designed for use directly at water treatment plants, wells or outdoors

• Wireless IrDA interface and USB port with documentation software

  Easily evaluate, archive and process measurement data on a PC

• Battery operation with charger – ready for use immediately

  Independent of the mains – ideal for mobile use and field measurements

Der Beitrag WINLAB Data Line photometer in case erschien zuerst auf RLS Wacon analytics.

What is sulfide measured for?

Sulphide (S²-) is produced by the anaerobic decomposition of organic substances containing sulphur and can cause an unpleasant smell of rotten eggs as hydrogen sulphide (H₂S). Even low concentrations are corrosive and can damage pipelines and structures.

Sulphide is harmful to health in higher concentrations and can cause respiratory and eye irritation in people who work with contaminated water. Sulphide is undesirable in drinking water treatment and must be reliably detected.

In industrial water treatment, in sewage treatment plants and in groundwater samples, sulphide control is essential to prevent corrosion and ensure water quality.

How does the test set work?

The CALDUR® Sulfide Test Set – Photometric is based on the DPD method. After adding two reagents to the water sample, a characteristic coloration develops within 7 minutes, the concentration of which is precisely determined with the WINLAB Data Line photometer.

Advantages of the CALDUR® test set

• Sensitive measuring range 0.05 – 1.0 mg/l S²-

  Detection of even low sulphide concentrations

• 100 provisions per set

  Economical for regular checks

• High precision due to photometric evaluation

  Objective, reproducible measurement results with the WINLAB Data Line

• Proven DPD method

  Reliable results even with stained samples

Der Beitrag Caldur® Sulfide – Photometric erschien zuerst auf RLS Wacon analytics.

What is silicate measured for?

Silicate (SiO₂) is a naturally occurring water constituent that comes from the dissolution of rocks and minerals. Silicate is particularly critical in boiler water technology, as it can form glass-like deposits (silicate scale) at high temperatures and pressures, which are extremely difficult to remove.

In high-pressure boilers, the silicate content must be kept particularly low, as even low concentrations can lead to deposits on turbine blades. Typical limit values are 0.02-0.5 mg/l SiO₂ depending on the operating pressure.

Silicate control is also important in drinking water treatment and in the production of ultrapure water (e.g. for the semiconductor industry).

How does the test set work?

The CALDUR® Silicate Test Set – Photometric is based on the molybdate method. After adding three reagents to the water sample, a yellow silicomolybdate complex is formed within 8 minutes, the concentration of which is precisely determined using the WINLAB Data Line photometer.

Advantages of the CALDUR® test set

• Wide measuring range 0.1 – 30 mg/l SiO₂

  Covers the range from boiler water to raw water

• 100 provisions per set

  Economical for regular checks

• High precision due to photometric evaluation

  Objective, reproducible measurement results with the WINLAB Data Line

• Proven molybdate method

  Specific for dissolved silicate

Der Beitrag Caldur® Silicate – Photometric erschien zuerst auf RLS Wacon analytics.

What is phosphate measured for?

Phosphate (PO₄³-) is a key nutrient in water bodies and an important control parameter in water treatment. Elevated phosphate concentrations promote algae growth and can lead to eutrophication of surface waters.

In drinking water treatment, phosphates are specifically dosed as corrosion inhibitors to protect pipelines from corrosion. The correct dosage must be monitored to ensure the desired protective effect.

Phosphate is used in cooling water systems and boiler water for hardness stabilization and as corrosion protection. Regular monitoring is essential for economical operation.

How does the test set work?

The CALDUR® Phosphate LR Test Set – Photometric is based on the molybdate method. After adding two reagents to the water sample, a blue color complex (molybdenum blue) is formed within 5 minutes, the concentration of which is precisely determined using the WINLAB Data Line photometer.

Advantages of the CALDUR® test set

• Sensitive measuring range 0.4 – 5 mg/l PO₄³-

  Ideal for drinking water and low-dose applications

• 200 provisions per set

  Cost-efficient for continuous use

• High precision due to photometric evaluation

  Objective, reproducible measurement results with the WINLAB Data Line

• Proven molybdate method

  Reliable and specific for orthophosphate

Der Beitrag Caldur® Phosphate LR – Photometric erschien zuerst auf RLS Wacon analytics.

What is phosphate HR measured for?

In many industrial applications, phosphates are used in significantly higher concentrations than in drinking water. In boiler water, the typical phosphate target value is 10-30 mg/l PO₄³-, depending on the operating pressure and type of system.

Phosphate acts as a hardness stabilizer in boiler water – it binds calcium and magnesium and thus prevents the formation of scale. Too low a dosage leads to deposits, too high a dosage leads to increased sludge formation.

Phosphates are used as corrosion inhibitors in cooling water systems in concentrations of 5-50 mg/l. Regular monitoring ensures optimum dosing.

How does the test set work?

The CALDUR® Phosphate HR Test Set – Photometric is based on the molybdate method. After adding a reagent to the water sample, a yellow color complex (phosphorus molybdate) is formed within 1 minute, the concentration of which is precisely determined with the WINLAB Data Line photometer.

Advantages of the CALDUR® test set

• Wide measuring range 2.5 – 100 mg/l PO₄³-

  Ideal for boiler water and industrial applications

• 100 provisions per set

  Economical for regular checks

• Fast response time of just 1 minute

  Immediate results for process control

• Proven molybdate method

  Reliable and specific for orthophosphate

Der Beitrag Caldur® Phosphate HR – Photometric erschien zuerst auf RLS Wacon analytics.

What is peroxide measured for?

Hydrogen peroxide (H₂O₂) is used in a variety of ways in water treatment: for disinfection, oxidation of organic impurities and as a dechlorination agent. The correct dosage is crucial – too little H₂O₂₂ is ineffective, too much can attack materials and increase costs.

Hydrogen peroxide is used as a chlorine-free disinfection alternative in swimming pools and whirlpools. Typical target values are 30-50 mg/l. Photometric measurement enables precise dosage control.

In industrial water treatment, H₂O₂ is used to remove chlorine, sulphide and other undesirable substances. Regular monitoring ensures that the dosage is optimal.

How does the test set work?

The CALDUR® Peroxide Test Set – Photometric is based on the titanyl sulphate method. After adding a reagent to the water sample, a yellow color complex is formed within 5 minutes, the concentration of which is precisely determined with the WINLAB Data Line photometer.

Advantages of the CALDUR® test set

• Wide measuring range 1.0 – 100 mg/l H₂O₂

  Covers the entire practical dosing range

• 150 provisions per set

  Economical for regular checks

• High precision due to photometric evaluation

  Objective, reproducible measurement results with the WINLAB Data Line

• Specific titanyl sulphate method

  Selective for hydrogen peroxide, low interference

Der Beitrag Caldur® Peroxide – Photometric erschien zuerst auf RLS Wacon analytics.

What is nitrite measured for?

Nitrite (NO₂-) is an intermediate product of biological nitrogen conversion and an Reagent for fresh impurities in water. The drinking water limit value is 0.5 mg/l NO₂- (Drinking Water Ordinance), and 0.1 mg/l at the waterworks outlet.

Nitrite is harmful to health as it impairs the blood’s ability to transport oxygen (methaemoglobinaemia). It poses a particular risk to infants and small children. In new pipes, nitrite can temporarily reach elevated levels due to bacterial activity.

Nitrite is the most dangerous nitrogen parameter in aquariums and must be checked regularly. In sewage treatment plants, nitrite control is used to monitor nitrification.

How does the test set work?

The CALDUR® Nitrite Test Set – Photometric is based on the NED method (naphthylethylenediamine). After adding a reagent to the water sample, a pink coloration develops within 5 minutes, the concentration of which is precisely determined with the WINLAB Data Line photometer.

Advantages of the CALDUR® test set

• Sensitive measuring range 0.02 – 1.0 mg/l NO₂-

  Detects contamination far below the drinking water limit

• 200 provisions per set

  Cost-efficient for continuous use

• High precision due to photometric evaluation

  Objective, reproducible measurement results with the WINLAB Data Line

• Proven NED method

  Highly selective for nitrite

Der Beitrag Caldur® Nitrite – Photometric erschien zuerst auf RLS Wacon analytics.

What is nitrate measured for?

Nitrate (NO₃-) is one of the most important water quality parameters. It enters the water via fertilizers, wastewater and natural decomposition processes. The drinking water limit value is 50 mg/l NO₃- (Drinking Water Ordinance).

Elevated nitrate levels indicate agricultural pollution or inadequate wastewater treatment. In infant formula, nitrate can be reduced to dangerous nitrite, which is why monitoring is particularly important.

In industrial water treatment, in cooling circuits and in wastewater treatment, nitrate measurement is used for process control and compliance with discharge limits.

How does the test set work?

The CALDUR® Nitrate Test Set – Photometric is based on the NED method (naphthylethylenediamine). After adding two reagents to the water sample, a characteristic coloration develops within 6 minutes, the concentration of which is precisely determined with the WINLAB Data Line photometer.

Advantages of the CALDUR® test set

• Wide measuring range 0.5 – 50 mg/l NO₃-

  Covers the entire practical range including drinking water limit value

• 200 provisions per set

  Cost-efficient for continuous use

• High precision due to photometric evaluation

  Objective, reproducible measurement results with the WINLAB Data Line

• Proven NED method

  Reliable and selective detection method

Der Beitrag Caldur® Nitrate – Photometric erschien zuerst auf RLS Wacon analytics.

What is Molybdaen measured for?

Molybdaen (Mo) is used in water treatment as a corrosion inhibitor, especially in closed cooling circuits and heating systems. The correct dosage is crucial for effective corrosion protection while at the same time avoiding overdosing.

Depending on the type of system, typical target values are between 5 and 50 mg/l Mo. Photometric measurement enables precise monitoring of the dosage.

How does the test set work?

The CALDUR® Molybdaen test set is based on the thioglycolic acid method. The reagent forms a color complex with molybdaene, the concentration of which is precisely determined with the WINLAB Data Line photometer.

Advantages of the CALDUR® test set

• Large measuring range 2.5 – 100 mg/l Mo

  Covers the entire practical dosing range

• 120 provisions per set

  Economical for regular checks

• High precision due to photometric evaluation

  Objective, reproducible measurement results with the WINLAB Data Line

• Only 1 reagent required

  Quick and easy to carry out in 4 minutes

Der Beitrag Caldur® Molybdaen – Photometric erschien zuerst auf RLS Wacon analytics.

What is MEKO measured for?

MEKO (methyl ethyl ketoxime) is an oxygen binding agent that is used as an alternative to DEHA and sodium sulphite in steam boiler systems. It has the advantage that it remains stable even at high temperatures and does not form any decomposition products that contaminate the steam.

Precise dosing of MEKO is crucial for optimum corrosion protection. The photometric measurement enables an objective and precise determination of the concentration.

MEKO is preferably used in high-pressure steam boilers and in systems where steam cleanliness is particularly important.

How does the test set work?

The CALDUR® MEKO Test Set – Photometric is based on the ferrozine method. The reagents form a color complex with MEKO, the concentration of which is determined photometrically using the WINLAB Data Line photometer.

Advantages of the CALDUR® test set

• Measuring range 0.5 – 10 mg/l MEKO

  Covers the practical dosing range

• 100 provisions per set

  Economical for regular checks

• High precision due to photometric evaluation

  Objective measurement results for optimum dosing

• Adapted to WINLAB Data Line photometer

  Optimum compatibility

Der Beitrag Caldur® MEKO – Photometric erschien zuerst auf RLS Wacon analytics.