pH Paper and other Test Strips
Single-use test materials used to rapidly and semi-qualitatively determine the acidity or alkalinity of liquids or to measure another parameter or substance; may include tests for starch, chlorine, and molybdenum; usually via the use of color-based reactions.
pH Papers, pH strips, pH sticks, and pH test kits are used in laboratory, industrial, and educational environments to qualitatively assess pH levels or monitor acid-base titrations in a range of sample types.pH Buffer reference standards are used for the accurate calibration of pH meters and monitors for far more precise and quantitative pH measurement.
pH Test papers are supplied either as rolls, tear-off strips, or sticks. They are impregnated with indicator dyes that change color at a specific pH. In some products, indicator dyes are covalently linked to cellulose fibers to avoid bleed-out (leaching) and contamination of the test sample.
Some pH papers indicate simple acid or base conditions with a single red-to-blue color change (also called litmus papers). Universal pH papers and strips contain a combination of indicators that cover a range of pH values up to and including 0 to 14 in a single test. The observed color change is checked against a comparison chart supplied with the papers.
Alternatively, for metered assessments of pH, standard or reference pH buffers are used to calibrate pH meters and other electrochemical sensors.
Standard Buffer Characteristics:
• Typically supplied at fixed values of pH 4.01, pH 7.00, and pH 10.01
• May be color-coded for easy and quick identification
• Certified to their nominal pH and accuracy at a specified temperature (typically 20°C)
• Supplied as ready-to-use solutions or concentrates
• Contain antifungals for extended shelf life
Hach Company Iron Test Strips (Total Dissolved Iron), 0-5 mg/L
In domestic water supplies, iron can do great economic damage by staining laundry and porcelain fixtures and by producing an off taste in beverages. In water supplies used for commercial beverage production, low levels of iron are critical. Hach's test strips provide the most easily-used method for determining low to mid-range iron concentrations. Technicians in the field can test many samples in only a few minutes and make immediate evaluations on-site. No measuring, set-up, clean-up, or chemical handling are necessary. Hach test strips are also used in laboratories all over the world for pre-test screening-to detect the presence of materials that might interfere with lab testing. Contains 25 tests.
Hach Company pH Test Strip, 7.5-14 pH units, 100 tests
Most natural waters range from pH 4 to pH 9, but commonly are above pH 7 because of carbonates and bicarbonates (alkalinity). The pH of water used in industry, boiler feed water, and swimming pools usually is kept within a narrow range.
Hach Company Free & Total Chlorine Test Strips, 0-10 mg/L
The most widely used disinfectant for drinking water, chlorine is also important for sanitizing swimming pools, cooling towers, other industrial equipment, and in the treatment of municipal wastewater. Its measurement and control are vital for both safety and economic reasons. Chlorine exists in water as "free" chlorine (hypochlorite) or "combined" chlorine (chloramines). With Hach Water Quality Test Strips, technicians in the field can test many samples in only a few minutes and make immediate evaluations on-site. No measuring, set-up, clean-up, or chemical handling are necessary. Hach test strips are also used in laboratories all over the world for pre-test screening-to detect the presence of materials that might interfere with lab testing. Contains 50 tests. *This product has not been evaluated to test for chlorine and chloramines in medical applications in the United States.
Hach Company Copper Test Strips, 0-3 mg/L
Copper exists in water as a soluble salt or as suspended solids. Concentrations exceeding 0.1 mg/L are useful for controlling algae and plankton growth. Quantities ranging from 0.02 to 0.1 mg/L are toxic for some fish, so its use for treating fish disease requires careful monitoring. With Hach Water Quality Test Strips, technicians in the field can test many samples in only a few minutes, and make immediate evaluations on-site. No measuring, set-up, clean-up, or chemical handling are necessary. Hach test strips are also used in laboratories all over the world for pre-test screening-to detect the presence of materials that might interfere with lab testing. Contains 25 tests.
Hach Company DPD Chlorine Color Disc
Fast, accurate visual method for determining chlorine concentrations.
USA Scientific Inc 1.2 ML TUBES IN STRIPS OF 12
1.2 mL polypropylene natural color tubes in strips of 12. Sterile.
Hach Company SpecCheck Secondary Gel Standards Set, DPD Chlorine - HR
DPD Chlorine, High Range, 0-6.5 mg/L as CI₂. Used to confirm consistent instrument response. Set contains four vials filled with gels that simulate the test color at various concentrations. *This product has not been evaluated to test for chlorine and chloramines in medical applications in the United States.
Hach Company Chlorine Dioxide Color Disc Test Kit, Model CLD-2
Monitor ClO2 levels on-site with the Chlorine Dioxide Test Kit. The Chlorine Dioxide Test Kit uses the reliable DPD method to monitor ClO2 concentration, while eliminating chlorine interference through the addition of glycine. With 100 tests per kit and available range of 0-2 mg/L and resolution of 0.1 mg/L, operators can accurately monitor around the 0.8 mg/L regulated limit.
Alkali Scientific ProCycle™ 1.2 mL 12-Strip Cluster (Dilution) Tubes, Racked, 10 Racks of 8 x 12 Strips, 960/Pk, Sterile
ProCycle™ 1.2 mL 12-Strip Cluster Tubes, Racked Systems are ideal for high-throughput screening processes and long-term storage. It all begins with high-clarity, ultra-pure polypropylene, combined with proprietary injection molding techniques to produce high-clarity vessels that are exceptionally robust, chemically-resistant, and pure. SBS footprint; 8 × 12 format. Ideal for automation / HTS. Tubes and racks are made from virgin polypropylene. Tube-and-rack system is suitable as a reaction vessel in your robotic workstation or as a long-term storage vessel in your sample library. A clear lid is a standard part of racked system. Certified free of detectable RNase DNase, DNA, PCR inhibitors, and tested pyrogen-free.