TESTOVAL colour comparison kit pH 8-12 for quick manual analysis of the pH value in water in the range pH 8 to 12. The individual values 8 mg/l, 8.5 mg/l, 9 mg/l, 10 mg/l, 11 mg/l and 12 mg/l can be read by visual colour comparison. In addition to the reagents, the scope of delivery includes a colour comparison device for easy concentration determination. Number of analyses: approx. 250 Measuring time: approx. 1 minute Also available in the shop: 1 set of reagents for approx. 250 analyses: Order no. 410611 Replacement colour comparison device: Order no. 410612

Heyl Testoval Phosphate Test Kit – Measure Phosphate Quickly by Hand Colorimetric test kit for easy determination of phosphate (P₂O₅) in water The Heyl Testoval Phosphate Test Kit allows simple and reliable determination of phosphate content (P₂O₅) in water samples. Measurement is performed colorimetrically via a visual color comparison and covers a range of 0 to 10 mg/L. The kit is a practical color comparison set for manual analysis of phosphate in water samples. The color develops within minutes after adding the reagents. By diluting the water sample 1:10 with distilled water, the measurement range can be extended tenfold. The kit allows for approximately 180 analyses in total. Fast Phosphate Analysis in Water Using Color Comparison The colorimetric method enables rapid determination of phosphate without complex equipment. After adding the reagents, the resulting color intensity is compared with a reference scale, allowing direct reading of the phosphate level. Due to its simplicity, the kit is ideal for routine checks, spot measurements, and applications where fast and reliable results are required. Typical Applications of the Phosphate Test Kit Manual phosphate determination is important in many areas of water analysis, particularly where nutrient levels must be monitored. Breweries Environmental monitoring Advantages of Phosphate Measurement with a Heyl Test Kit The Heyl Test Kit provides a simple, fast, and cost-effective way to measure phosphate content in water samples without the need for electronic devices or laboratory infrastructure. The colorimetric method delivers meaningful results within minutes. The main advantage: immediate results, allowing on-site assessment of whether phosphate levels are within acceptable limits, enabling quick response when needed. This is particularly useful for routine checks, spot measurements, or emergency testing. Easy handling: No special training or equipment required Mobility: Ideal for field measurements and decentralized applications Low cost: No purchase or maintenance of electronic devices needed Reliability: Proven method for reproducible results Flexibility: Can be used where no electricity or lab is available Why Phosphate Measurement Is Essential Phosphate is a key nutrient in water, but high concentrations can cause significant ecological and technical problems. Even small excesses can lead to algae growth, oxygen depletion, and deteriorating water quality. Regular phosphate monitoring is critical for: Environmental monitoring: Protect water bodies from over-fertilization Water treatment: Ensure compliance with legal limits Industry & breweries: Maintain stable process and product quality Wastewater management: Monitor the performance of treatment plants The Heyl Phosphate Test Kit enables fast, reliable, and lab-independent monitoring on site, allowing early trend detection and targeted interventions.

Testoval Silicate Test Kit – Color Comparison for Rapid Analysis Reliable manual determination of dissolved silicate in water The Testoval Silicate Test Kit is designed for rapid, manual analysis of silicate content in water in the concentration range of 0–10 mg/l SiO₂. Individual values of 0.25 mg/l, 0.5 mg/l, 1 mg/l, 2.5 mg/l, 5 mg/l, and 10 mg/l can be read using a visual color comparison. When reagents are added to the water sample, a characteristic color develops. The provided comparison scale allows easy reading of the concentration levels. By diluting the sample 1:10, the measurable range can be extended by a factor of 10. The kit allows for approximately 100 individual analyses, with each measurement taking about 19 minutes. Manual determination of dissolved silicate in water up to 10 mg/l The Testoval Silicate Test Kit enables reliable, manual analysis of dissolved silicate (SiO₂) in water. After adding the reagents, a characteristic color reaction occurs, which is evaluated using the included comparison scale. Diluting the water sample 1:10 allows flexible extension of the measurement range by a factor of 10. Why monitoring silicate in water is important Dissolved silicates play a crucial role in industrial water treatment, particularly in boiler feed water, cooling water, and reverse osmosis systems. Excessive silicate concentrations can lead to the formation of stubborn deposits (silicate scale), which are difficult to remove and significantly impair heat transfer and system efficiency. In membrane processes, silicate can also cause irreversible damage and significantly shorten membrane lifespan. Regular silicate monitoring allows early detection of limit exceedances, targeted process control, and prevention of costly system damage. The Testoval Silicate Test Kit thus supports safe process management and long-term operational reliability.

Colour comparison kit for the concentration range 0-20 mg/l SO32-. Individual values ... 0.5 mg/l 1 mg/l 2.5 mg/l 5 mg/l 10 mg/l 20 mg/l ... can be read by visual color comparison.  In addition to the two reagents a color comparison device for easy determination of concentration is included in the supply. Analyses: approx. 150 Measuring time: approx. 3 minutes Also available in the shop: 1 set of reagents for approx. 150 analyses: Order no. 410635 Replacement sulphite colour comparison device: Order no. 410636

Spare color comparator without cuvette, for rapid manual analysis of aluminum content in water in the concentration range 0-1.5 mg/l Al. The individual values can be read by optical color comparison. By diluting the water sample in a ratio of 1:10 with distilled water, the measuring range can be extended to 10 times the concentration. The 2 reagents required for the simple concentration determination are not included in the scope of delivery of this color comparator.Refill packs:1 set of reagents for approx. 130 analyses: Order no. 410651Complete color comparison set incl. reagents and accessories: Order No.: 410650

Spare color comparator without cuvette, TESTOVAL Chloride for fast manual analysis of the chloride content in water in the concentration range 0-100 mg/l Cl.The individual values 1 mg/l, 5 mg/l, 10 mg/l, 25 mg/l, 50 mg/l and 100 mg/l can be read by optical color comparison. Only a color comparator for simple concentration determination is included in the scope of delivery.A set of reagents for approx. 40 analyses or a complete set can be ordered separately.Number of analyses: approx. 40 Measuring time: approx. 3 minutesAlso in our assortment: Refill kit: 1 set of TESTOVAL Chloride reagents for approx. 40 analyses: Order no. 410527 Complete set of color comparison kit TESTOVAL Chloride: Order No. 410526

Replacement color comparator without cuvette for rapid manual analysis of the nitrite content in water in the concentration range 0-1 mg/l N02.The individual values 0.05 mg/l, 0.1 mg/l, 0.2 mg/l, 0.3 mg/l, 0.5 mg/l and 1 mg/l can be read by optical color comparison. By diluting the water sample 1:10 with distilled water, the measuring range can be extended to 10 times the concentration. Only the color comparison device is included in the scope of delivery.  Measuring time: approx. 15 minutesAlso in our assortment: 1 set of reagents for approx. 100 analyses: order no. 410581 Complete colorimetric test kit nitrite: Order no.: 410580

Replacement color comparator without cuvette, for fast manual analysis of the pH value in water in the range pH 8 to 12.The individual values 8 mg/l, 8.5 mg/l, 9 mg/l, 10 mg/l, 11 mg/l and 12 mg/l can be read by optical color comparison. Only the color comparator for simple concentration determination is included in the scope of delivery.Measuring time: approx. 1 minuteAlso in our assortment: 1 set of Testoval pH 8-12 reagents for approx. 250 analyses: order no. 410617 Complete test set Testoval pH 8-12: Order no. 410616

Water Hardness DUO Titration Kit – Flexible Hardness Analysis For precise measurement of water hardness The Water Hardness DUO Titration Kit is designed to measure water hardness in raw water (30–80 °dH) and treated water (0–2 °dH). With the DUO kit, you can reliably determine the hardness of both raw and treated water. The set includes all necessary reagents and accessories for immediate use. Precise Determination of Water Hardness in Raw and Treated Water The Water Hardness DUO Titration Kit provides a flexible and reliable analysis of water hardness for both raw and treated water. It covers a wide measurement range from 30–80 °dH in raw water and 0–2 °dH in treated water, making it ideal for various applications in water treatment. The kit is designed for users who require fast and accurate hardness measurements, whether for untreated raw water or softened water. Advantages of the Water Hardness DUO Titration Kit With the DUO titration kit, two measurement ranges can be covered with a single set. This reduces the need for separate measurement systems and allows efficient monitoring of water hardness before and after treatment. The set includes all necessary reagents and accessories for immediate use. The manual titration method delivers precise and reproducible results and is particularly suitable for control measurements, commissioning, or mobile applications in water analysis.