Reagents for Photometers

Find reliable reagents for accurate photometric water analysis. Our selection includes tablets, powders and liquid reagents for measuring chlorine, pH, alkalinity, hardness and other important water parameters.

Choose reagents that are compatible with your photometer and measurement method. Each product page provides information about the supported parameters, format and quantity.

Orders are dispatched from Spain and Germany, with delivery available throughout the European Union.

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Reagents for Accurate Photometric Water Analysis

Photometer reagents are an essential part of reliable water testing. When a reagent is added to a water sample, it produces a colour reaction related to the concentration of the selected parameter. The photometer measures this reaction and displays the result as a numerical value.

Reagents for Different Water Parameters

Depending on the photometer and test method, reagents can be used to measure chlorine, pH, alkalinity, hardness, bromine, cyanuric acid and other water quality parameters. They are available in several formats, including tablets, powders and liquids.

Using the correct reagent is essential for obtaining accurate results. Before ordering, check the reagent reference, measured parameter, testing range and compatibility with your photometer. Similar-looking reagents are not always interchangeable between different instruments or test methods.

Applications for Photometer Reagents

Photometric reagents are used for swimming pools, spas, drinking water, aquariums, aquaculture, laboratories and professional water treatment. Regular testing helps monitor water quality, identify changes and support correct chemical dosing.

Storage and Handling

Store reagents in accordance with the manufacturer’s instructions and protect them from moisture, heat and direct sunlight. Always check the expiry date and follow the specified test procedure, sample volume and reaction time.

We supply water-testing reagents from Spain and Germany and deliver orders throughout the European Union.

Frequently asked questions

How long does delivery take?

Orders are dispatched within 1–3 business days from our warehouses in Spain and Germany. After dispatch, delivery across Europe usually takes 3–7 business days. You receive a tracking link by email when the parcel leaves the warehouse.

How much does shipping cost?

Standard shipping is free for orders of €100 or more within Spain and €150 or more to the rest of Europe. Below that, the exact cost is shown at checkout before you pay (for example €9.90 to Germany, France and other European countries).

Which countries do you ship to?

All EU countries, plus the United Kingdom, Switzerland, Norway, Iceland, Liechtenstein, the Western Balkans, Moldova and Ukraine. For deliveries outside the EU, import duties, import VAT or customs fees of the destination country may apply and are paid on delivery.

Can I return a product?

Yes. You can withdraw from a purchase within 14 days of receiving it, without giving a reason. Email info@buzok.eu with your order number, then return the product unused in its original packaging. We refund the payment, including the original standard delivery cost, within 14 days. Return shipping is paid by the customer unless the product arrived damaged, defective or wrong. Custom 3D-printed items made to your specifications cannot be returned once production has started.

What warranty do the products have?

Every product has a 3-year legal guarantee from the date of delivery under Spanish consumer law. If a product is defective, email info@buzok.eu with your proof of purchase; we repair or replace it, or refund the price.

Can I cancel or change my order?

Yes, free of charge, as long as the parcel has not been handed to the carrier. Email info@buzok.eu as soon as possible with your order number.

Which reagents do I need for my photometer?

Each photometer page lists every test it can run with the reagents it needs, and each reagent page lists the compatible photometers and measuring ranges. Manuals and video guides are on our Photometer Manuals & User Guides page. Not sure? Email info@buzok.eu with your photometer model.