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 Chlorine Reagent Set (Total), Ultra Low Range DPD
For determination of ultralow Total Chlorine concentrations by the DPD Method. Hach Method 8370. USEPA accepted for drinking water and wastewater analysis. Range: 2 - 500 μg/L Cl₂. Reagents are ampuled for stability. Reagent set includes ULR Chlorine Buffer Solution (1.5 mL ampules), DPD Indicator Solution for ULR Chlorine (1.5 mL ampules) and Blanking Reagent for 20 tests.Boric Acid free!*This product has not been evaluated to test for chlorine and chloramines in medical applications in the United States.
USA Scientific Inc 8-cap strip for 1.2 mL tubes
8-cap strip for 1.2 mL tubes in the 1412-14xx series, str, 125 strips (1000 caps). Polyethylene.
CTL Scientific Supply Corp PH-FIX ST. 1.7-3.8,CS/10BX/100
PH-FIX 1.7-3.8 TEST PAPER are non-bleeding indicator strips. Gradation of scale: 1.7 - 2.0 - 2.3 - 2.6 - 2.9 - 3.2 - 3.5 - 3.8 (case of 10 boxes of 100 strips each)
ASI STANDARDS Chlorine in Water Check Standard - Ultra Low Concentration, 5.00 mg/kg - 100 mL
Chlorine in Water manufactured and certified gravimetrically under the guidance of an ISO 9001 quality management system. When applicable, standards are traceable to NIST certified reference materials.ISO 17034 Certified Reference Material
CTL Scientific Supply Corp Fluoride Test Paper, Box of 200 strips
This paper is used for the determination of fluoride ions and gaseous hydrogen fluoride (H2 F2 ). The pinkish-red paper turns yellowish-white in the presence of fluorides. Substantial amounts of chlorates, bromates and sulphates cause white discolorations of the paper. These interferences are readily circumvented. Limit of sensitivity: 20 mg/l fluoride
Alkali Scientific ProCycle™ 1.2 mL 8-Strip Cluster (Dilution) Tubes, Racked, 125/Pk, Non-Sterile
ProCycle™ 1.2 mL 8-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.
Hach Company pH Paper, 3.0 - 5.5 pH Range
Provides simple, fast, economical method of pH measurement. Sharp color change for each 0.5 pH unit. Convenient for sample pH adjustments. Recommended for sewage water, not finished water. Five 4.6-meter (15') rolls per package.
Sigma Aldrich Fine Chemicals Biosciences HettichR MIKRO 200/200R ce1EA
.nbspStandard micro centrifuge.nbspAvailable in non-refrigerated (200) and refrigerated (200R) versions.nbspCapacity 24 x 1.5/2.0 mL.nbspMax RPM/RCF 14000/18626 (fixed angle).nbspChoice of 24 or 30 place rotor or PCR strip rotor or Cryo tube rotor.nbspBio-containment autoclavable phenol resistant lids available.nbspFast cool function down to 4C in 10-15 minutes.nbspCE Compliant
Research Products International Corp 12 Cap Strips for ClusterTubes and RKs, Non-S, 80 Strips
ClusterTubes are ideal for dilution, mixing, harvesting, culture assays, screening and storage applications. Rack systems are also suitable as a reaction vessel in robotic workstations or as a long-term storage vessel in sample library. Tube are available as individual tubes, strips of 8 tubes or 12 tubes. Racks feature bold, black alphanumeric indexing and are made from autoclavable virgin polyproplyene; caps are polyethylene material; and racked tubes are supplied with clear lid. Tube volume is 1.2ml.
DNase, RNase, DNA, PCR inhibitor & pyrogen free
Ideal for Automation, HTS
SBS footprint; 8 x 12 format