Test strips & indicator papers

Universal indicator paper covers the whole pH range, from 1 to 14, and tells you quickly whether a solution is acidic, neutral or alkaline and roughly how strongly. Use it for orientation. Narrow-range paper covers a few pH units with finer colour steps, so you read the value more precisely within that range; the range is in the product title. A common approach is universal paper first, then narrow-range paper around the result. For exact values, documentation or calibration, use an instrument from pH meters. Not sure which range you need? Ask sales@luminixhealth.com.

Litmus paper only tells you acid or base: red paper turns blue in alkaline solutions, blue paper turns red in acids, as with the litmus paper, blue, booklet and the litmus paper, red, booklet. It suits teaching and quick yes-or-no checks. pH strips have several indicator pads and give a more precise reading; some are non-bleeding, so the colour does not run into the sample, which the product page states. Indicator paper on a roll lets you tear off the length you need and is economical for many measurements. Questions? Ask sales@luminixhealth.com.

Choose by parameter first, then by range: the strip must cover the concentration you expect, ideally in the middle of its colour scale. Test papers exist for many substances, for example the sulfide test paper or the fluoride test paper; the parameter and range are on each product page. Strips are semi-quantitative: they show whether a value is roughly low, medium or high, which suits screening and process checks. When you need a precise figure for reporting, use colorimetric test kits or cuvette tests. Tell us your parameter: sales@luminixhealth.com.

Store test strips dry, dark and tightly closed in their original container, and close it immediately after taking a strip. Moisture, light and air make the indicators react slowly, which gives wrong readings later. Do not touch the pads with your fingers. The expiry date is printed on the pack; use the strips only within that date and the conditions on the product page. In humid rooms, a container with desiccant helps; see desiccators and desiccant. To check whether a closed pack stayed dry, a moisture indicator paper is useful. Questions? Ask sales@luminixhealth.com.

A test strip or indicator paper changes colour when it meets an ion, a pH or another analyte. It is a fast, coarse reading. The scale printed on the pack is the only scale that strip may be read against. A wet finger contaminates a pH paper before the sample does.

A test kit turns a chemical question into a colour, a titre or a reading on a strip, so the operator does not have to assemble the method from separate reagents. A cuvette test is a ready optical cell. A strip is a field reading. The range printed on the kit is the range where the answer means something. Outside it, the kit is silent or wrong. The substances inside are on PubChem. Water measurement traces to NIST.

This shelf belongs to Test kits & water analysis, inside Lab chemicals. Luminix Health distributes this range for laboratory use.

The neighbouring shelves are Cuvette tests (Nanocolor), Colorimetric test kits and Test inks & surface tension. The category above this shelf is Test kits & water analysis.

Luminix Health distributes this range from the heart of Europe. We deliver across the EU in two to five days if in stock. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. Send a quote request, contact the team, or read who we are. The full brand index is on shop by brand.

The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology. If the article is not on the shelf, request a quote.