pH Test Strips

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pH Test Strips

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Attention Thomas Scientific Customers

Due to current pandemic, lead times for PPE items are longer than what is listed on our website. Please expect shipping delays of all PPE products during this time.

  • Various types of indicator papers cover a wide pH range to allow for good accuracy of determining pH value of a solution. These Narrow Range Test Papers offer high sensitivity and sharp color change. Narrow pH unit graduation: 0.2-0.4 (Congo Red: color change to red indicates within specified range…

  • Chlorine Test Papers

    Advantec MFS

    Detecting the concentration of residual chlorine in sodium hypochlorite solution (NaClO) or hypochlorous acid (HClO). Dip the indicator test strip in solution and compare to the color chart on the container. 1-10ppm is a 5x85mm plastic strip with indicator pad (50/pk); 10-50ppm and 25-200ppm…

  • The non-bleeding pH strips SafetyEdge for easy removal with no spillage Outstanding color scale for clear pH determinations The great advantage of EMD Millipore’s rapid pH tests is that this method of determination can be used directly on the spot without requiring any…

  • Hydrion Quat Test Paper

    Micro Essential

    Hydrion QT-10 Quaternary Test Paper provides a simple, reliable, and economical means to measure the concentration of Quaternary Sanitizers, including n-alkyldimethylbenzyl and/or n-alkyl dimethyl ethyl benzyl ammonium chloride, and Rocall II. With color matches at 0-100-200-300-400ppm (parts per…

  • Hydrion Chlorine Test Paper provides a simple, reliable, and economical means to measure the concentration of free available chlorine in sanitizing solutions. With color matches at 10-50-100-200ppm, the test paper measures concentrations between 10-200ppm. Federal, State and Local health…

  • pH Test Paper/Comparator

    Micro Essential

    In transparent plastic dispensers, for determination of pH values of colorless liquids Tests are made by dipping a strip of the paper in the liquid to be tested and comparing the color with a chart in the comparator Dispensers contain two 15’ rolls of 1/4” wide test paper …

  • Hydrion Jumbo Size pH Papers are easier to read with larger color charts. The .5" width of the paper enables clearer and quicker color matching. Hydrion Jumbo Insta-Chek Wide Range pH Paper consists of roll of pH paper, packed in a plastic dispenser with an extra large color chart for…

  • Peracetic Acid Test Paper

    Micro Essential

    Peracetic Acid Test Paper measures the concentration of PAA from 0-160 with match points covering the critical ranges for anti-microbial fruit and vegetable rinses. Packed 50 strips in a desiccant lined flip-top vial. 6 vials per box. Immerse test strip for no more than 1-2 seconds. Remove…

  • Permits more precise pH readings and are useful in many specific applications Test papers show a distinct color change for each half pH unit Dispenser contains one 15 foot roll of test paper 7/32” wide

  • Contains four distinct indicator dyes fixed to a plastic strip that provides accurate pH measurement without the use of a pH meter Even buffered or weakly buffered solutions can be measured Sticks are color-fixed and non-bleeding Packaged in easy-to-use boxes containing 100 sticks each.

  • Hydrion Plastic pH Strips

    Micro Essential

    Conveniently packed in flip-top vials, these premium quality, wide-range plastic strips offer clear, bright single color matches. Simply dip the strip into the test solution, then instantly compare the resulting color with the matching pH color chart. Each vial contains 100 strips. Sold in…

  • Full range pH measurement one roll 0-13 and one roll 12.5 to 14.0 Clear color changes, from a bright blue at 12, through green at 13, to yellow at 14 5/32” wide x 15 feet roll in dispenser with 2 color comparison charts Replacement test papers 3109D74 and D81 are furnished in…

  • Litmus Papers

    Advantec MFS

    Litmus Paper provides a general detection for whether a solution is acidic (blue) or alkaline (red). Dip the indicator test strip in solution. A color change is confirmation. Please Note: ALL Advantec items have a maximum 48 hour cancellation window. Any cancellations AFTER the 48 hour window…

  • Wide pH range of 0.0 to 6.0 Dispenser has a serrated edge to easily tear off the desired size paper Color chart provides distinct color changes for clear matching Double roll dispenser is supplied in a polypropylene case for protection and portability Sufficient for at least 240 tests

  • This short-range Hydrion MicroFine pH Paper measures pH solutions in the slightly acid, neutral, and alkaline range of 5.5-8.0 and offers clear bright single color matches at every .2 to .3 interval. Hydrion MicroFine pH Papers are ideally suited to testing minute amounts of solution, only…

  • pH Indicators & Dyes Stem Kit

    United Scientific Supplies

    Our pH, Indicators & Dyes kit includes 4 primary activities, each accommodating up to 40 students. This STEM kit contains structured investigations to make inquiry based learning affordable and fun! For pennies per experiment, your students have access to digital PDF content such as Individual…

  • D / R Dispenser 0.0-14.0

    Micro Essential

    The Micro Essential® Hydrion™ Ultrafast Double Roll Dispenser covers the pH range from 0.0-14.0 and consists of two paper rolls in a dual roll protective plastic dispenser having a serrated edge to easily tear off the desired size paper. For protection and portability, the dispenser comes…

  • The chlorine test is suitable for rapid determination of higher concentrations of chlorinated disinfectants, which are chiefly used in the food industry.

  • The test strip can be used to check quaternary ammonium compounds, which have microbicidal properties and are mainly used in surface cleaners.

  • pH-Indicator Papers


    Reliable, High-Quality, Long-Term Storage Quick and reliable pH-testing is crucial for many processes in food, pharmaceutical and chemical industry process water and waste water analysis production and quality control research and development. pH-indicator papers by…

  • With pH-Fix test strips, you can test the pH value quickly and easily directly at the point of interest. The strips are ready to use at any time and don’t need any calibration, set-up or maintenance. Therefore, pH determination with pH-Fix test strips is very easy, regardless of your…

  • This Hydrion™ double roll dispenser holds two 15 foot rolls of pH paper with a wide range readable from pH 6-11. The dispenser is constructed of polystyrene with stainless steel cut off lips. This wide range paper has a sharp color change for each full pH unit. The pH color chart…

  • Chloride Test


    The chloride test is suitable for measuring chloride ions in all natural waters. Their concentration depends on geological factors and the general local situation. Storage Store at +2°C to +8°C

  • Convenient and economical Plastic-backed paper test strips for determining pH Supplied in packages of 6 transparent plastic boxes of 100 strips per box with color comparison chart Can be rinsed briefly to permit testing of colored, turbid solutions; can be used to test solutions…

  • Hydrion Jumbo Size ph Papers are easier to read with larger color charts. The .5" width of the paper enables clearer and quicker color matching. Hydrion Insta-Chek Wide Range pH Paper, the ultimate in wide range, general purpose pH papers has a distinct color match at each full pH…

  • Reusable dispensers hold two rolls of standard-size Hydrion pH papers - 15 ft.L x 0.21 in.W (4.6m x 0.55cm) - plus matching color charts Feature stainless-steel cut-off lips on each side Wide-range paper provides a sharp color change for each full pH unit

  • pH Range: 1.3 to 4.4 Provides precise, pinpoint pH measurement over a narrow pH range MicroFine pH Determination. Ultra-fast results with accuracy in intervals of 0.2-0.3 pH unit Dispenser contains two rolls of one type of pH test paper Colorimetric chart shows clear, positive changes…



    The peroxide test is suitable for checking the current concentration of diluted peroxide solutions to ensure the disinfectant effect.

  • Provides a simple, fast, economical method of pH measurement. Obtain accurate results in weakly buffered, turbid and lightly colored samples. Measures 0-14 pH. Test Strips are great for quick evaluations of pH levels in the lab or in the field Easy to use, disposable, and inexpensive

  • Hydrion Insta-Chek® pH Paper, the ultimate in wide range, general purpose pH papers has a distinct color match at each full pH unit:[0.0][1.0][2.0][3.0][4.0][5.0][6.0][7.0][8.0][9.0][10.0][11.0][12.0][13.0]. Hydrion Insta-Chek pH Papers provide: A direct reading pH paper with the…

  • Nitrate Test


    The test can be used to determine nitrite in the environmental analysis, surface water investigations and aquaristics. The test extends the range of sensitivity into the lower range of detection.

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