Roll length 5 m, 10 mm width. With two colour zones. Duotest indicator papers combine two different indicator zones on a single strip. The zones are separated by a hydrophobic barrier, which effectively prevents mixing of the reaction colors, simplifying and precisely assigning the pH value.

Simple, completely impregnated indicator papers without colour scale. For orienting measurements and adjustments in different pH ranges.

For the determination of pH values. Plastic dispensing reel with 1 roll of 5 m.

For pH determination. Indicator paper sticks of 80 mm length.

Most of our special test papers are semi-quantitative. They have a high-quality colour chart that allows quick and easy determination.

For determination of pH- value. Permanent colour. Non bleeding.

Lithmus papers are usefull for determining whether a solution is acidic or basic.The red lithmus paper has a pH measurement range 5,0 pH to 8,0 pH. The color changes from red to blue.The blue lithmus paper has a pH measurement range 8,0 pH to 5,0 pH. The color changes from blue to red.Scope of supply: 10 booklets of 20 papers

The test paper allows the quick and easy detection of hydrogen sulphide. This gas occurs in the processing of raw oil. It is toxic even in low concentrations. Therefore, critical points are carefully checked. Sulphide containing solutions also give a positive reaction. Lead acetate is toxic and the test paper needs to be declared as hazardous. The technically equivalent Sulphide test paper is a non-toxic and safe alternative.

For the determination of pH values.

For determination of pH value. Vial with snap lid of 100 pre-cut indicator paper strips.

Flip-top vial is easy to open and close with one hand. The new LLG pH strips offer the utmost in convenience and ease of use in laboratory-grade testing. With a single colour match, and a 12 mm reagent pad, these universal pH strips (0.0-14.0) belong in every lab.pH measuring range: 0 - 1412 mm matching area for quick matches,Flip-top vial stays closed when dropped, but is easy to open with one-hand.Vial keeps strips safe from the elements1 pack (vial) of 100 strips

Non-bleeding. Ranges as indicated. Supplied in packs of 100 strips.

Non-bleeding. Supplied in packs of 100 strips.

Litmus paper, available in blue, red and neutral. Supplied in booklets of 100 strips, 10 x 70mm W x L.Also available as reel. Refill packs available separately.

For determination of pH- value.Plastic dispensing reel with 1 roll of indicator paper and colour scale.

For determination of pH- value.

For determination of pH- value.Plastic dispensing reel with 1 roll of indicator paper and colour scale.

For determination of pH- value.

Roll length 5 m, 10 mm width. With two colour zones. Plastic box with 1 roll of indicator paper and colour scale. Duotest indicator papers combine two different indicator zones on a single strip. The zones are separated by a hydrophobic barrier, which effectively prevents mixing of the reaction colors, simplifying and precisely assigning the pH value.

For determination of pH value.Roll length 5 m, 14 mm width. With 3 colour zones and 2 hydrophobic zones. The zones are separated by a hydrophobic barrier, which effectively prevents mixing of the reaction colours and increases mechanical stability.Plastic container with 1 roll of indicator paper and colour scale.

For determination of pH value.Roll length 5 m, 14 mm width. With 3 colour zones and 2 hydrophobic zones. The zones are separated by a hydrophobic barrier, which effectively prevents mixing of the reaction colours and increases mechanical stability.

For determination of pH-value in coloured solutions.Supplied in packs of 200, 11 x 100mm W x L strips.

For determination of pH-value.Roll length 5m, 10mm width. With three colour zones, without hydrophobic zone.Plastic container with 1 roll of indicator paper and colour scale.

For determination of pH-value.Roll length 5m, 10mm width. With three colour zones, without hydrophobic zone.

For determination of pH- value. Permanent colour. Non bleeding.* PlopTop tube.

Arsenic-test paper. 200 strips. Dimension: 20 x 70 mm

For determining of pH values in human medicine, agriculture, laboratories, and industry.

Each reel contains a paper strip 5 metres long x 7 mm wide. Supplied singly.

Available in pack of 100 strips, 80 x 6 mm ( L x W). Dyes are chemically bonded to prevent leaching.

Pack of 200 strips. Dimensions: 11 x 100 mm. With blank central segment. Suitable for coloured solutions.