Sulphite (SO32)

Testoval Sulfite Reagents Refill Pack – precise sulfite measurement Refill reagents for reliable determination of sulfite in water The reagents refill pack contains replacement liquids for the Testoval sulfite test kit. With these replacement reagents, you can continue using your test kit without purchasing a new one. For regular sulfite measurements in water, the Testoval sulfite reagents refill pack provides a practical way to keep existing test sets in use efficiently. The reagents are precisely matched to the Testoval system and support reliable determination of sulfite concentration via visual color comparison. After being added to the sample, a measurable color change occurs, which is compared with the reference values of the color comparator. This allows the sulfite content to be quickly determined – without electronic measuring devices or additional technical effort. Refill and determine precise sulfite values in water The refill pack for sulfite tests in the concentration range of 0–20 mg/l SO₃²⁻ is sufficient for approx. 150 analyses. The typical application range is 0–20 mg/l SO₃²⁻, making the refill pack suitable for many water monitoring applications. The refill pack represents an economical solution for regular sulfite measurements. Advantages of the Testoval sulfite refill reagents for water analysis With the refill pack, you extend the service life of your existing Testoval sulfite test kit without having to purchase a complete new analysis set. The included reagents enable reliable and reproducible measurement results with a measurement time of approx. 19 minutes per analysis. Regular monitoring of sulfite is important to safely control chemical processes, manage dosing, and maintain consistent water quality. The refill reagents support efficient and economical routine analysis. Accurate sulfite dosing plays a particularly important role in corrosion prevention. The color comparator, cuvettes, and accessories are not included in the scope of delivery. Additional products are available in our online shop Item number: 410634 Testoval sulfite test kit – complete set for analysis Item number: 410636 Replacement color comparator sulfite – for optical evaluation Frequently asked questions How long do Heyl chemicals last? The shelf life is printed on the label of each product. Upon delivery, the guaranteed shelf life is at least 7 months. Can Heyl reagents also be purchased individually? That depends on the specific item to be ordered. For Testoval products, only the complete refill pack can be ordered. The individual small bottles cannot be reordered separately. For the Duroval test kit, the individual components of the refill pack can also be reordered separately. Can the indicator and titration solution be purchased separately? Yes, this is possible for the Duroval product range. Where can I find the safety data sheet? The safety data sheet can be found directly with the product in our shop or separately in the download area under the relevant heading. How can the chemicals be disposed of? Disposal instructions can be found in section 13 of the safety data sheet. Disposal must be carried out in accordance with official regulations. Can the chemicals still be used after the expiry date? No, the chemicals can no longer be used after the expiry date. After the expiry date, accurate measurement results can no longer be guaranteed. How should Heyl chemicals be stored? Section 7 of the safety data sheet contains all relevant information on the storage of chemicals. The recommended storage temperature should be between 15-25°C.

Replacement color comparator without cuvette, for the concentration range 0–20 mg/l SO32-. Thanks to the Testoval color comparator, you can continue sulfite measurements without purchasing a new test kit. Due to its compact design, the device is ideal for mobile use and laboratory applications. The Testoval color comparator from Heyl is used for the fast visual evaluation of water samples in sulfite determination. It is optimally matched to the corresponding Testoval reagents and enables direct assessment of concentration through color comparison. After the reaction of the sample with the reagents, a characteristic coloration develops. This is compared with the stored reference values in the device, allowing the sulfite content to be determined easily. Your advantages with the color comparator Thanks to its compact design, the device is particularly practical for mobile use and is equally suitable for daily use in laboratories or technical systems. For these reasons, the device is lightweight and easy to use without prior knowledge of chemistry or extensive training. It can be used independently of power supply and electronic measuring devices. The individual values 0.5 mg/l, 1 mg/l, 2.5 mg/l, 5 mg/l, 10 mg/l and 20 mg/l can be read by optical color comparison. The scope of delivery includes only the color comparator for simple concentration determination. Additional products available in our shop Item number: 410634 Testoval sulfite test kit – complete set for analysis Item number: 410635 Testoval sulfite reagents refill pack – for additional analyses

Color comparison test kit TESTOVAL Sulfite for the concentration range 0–20 mg/l SO32-. The sulfite test kit is suitable for many application areas, including the control of oxygen scavengers (sulfite dosing). Regular monitoring helps to prevent corrosion in systems. For fast monitoring of sulfite in water, the Testoval sulfite test kit offers a practical solution without complex measuring technology. The set works with an optical color comparison and enables direct evaluation of the water sample – ideal for applications where ease of use and fast results are essential. After adding the reagents, a color reaction develops. This is compared with stored reference values in the color comparator, allowing the concentration to be determined reliably. The measuring range is 0–20 mg/l SO₃²⁻ and covers typical requirements in water monitoring. The individual values 0.5 mg/l, 1 mg/l, 2.5 mg/l, 5 mg/l, 10 mg/l and 20 mg/l can be read by optical color comparison. The scope of delivery includes two reagents as well as a color comparator for simple concentration determination. Advantages of the Heyl test kit for sulfite measurement The test kit offers a convenient solution for fast and simple sulfite determination on-site and on the go. It uses a visual measurement method, so no power supply is required. The color comparator allows easy and quick evaluation of reliable results thanks to its clear gradation. Possible application areas The test kit is suitable for various applications and is particularly relevant in areas where sulfite-related corrosion may occur. These include monitoring boiler feed water and steam systems, controlling oxygen scavengers (sulfite dosing), and use in cooling and process water systems. Technical Data Measurement parameter: sulfite (SO₃²⁻) Measuring range: 0–20 mg/l Readable values: 0.5 / 1 / 2.5 / 5 / 10 / 20 mg/l Number of analyses: approx. 150 Measurement time: approx. 3 minutes Measurement principle: colorimetric color comparison Additional products also available in our shop Item number: 410635 Testoval sulfite reagents refill pack – for approx. 150 additional analyses Item number: 410636 Replacement color comparator sulfite – for optical evaluation