761 Results for: "Spectrophotometers"

Sort By

« ‹ 19 20 21 › »

Phosphorus ICP Standard, 1 ml = 1 mg P (1000 ppm P) NH₄H₂PO₄ in H₂O, Ricca Chemical Company

Supplier: Ricca Chemical

1 mL = 1 mg P (1,000 ppm P)NH4H2PO4 in H2O

Expand 2 Items

Titanium ICP Standard, 1 ml = 10 mg Ti (10,000 ppm Ti)(NH₄)2TiF₆ in H₂O / trace HF, Ricca Chemical Company

Supplier: Ricca Chemical

10,000 ppm = 10000 µg/mL

Expand 2 Items

Full UV/VIS Photometric Accuracy, Wavelength and Stray Light Calibration Kit, Fireflysci

Supplier: FIREFLYSCI, INC.

Broad range solid-state standard kit for checking photometric accuracy, wavelength accuracy and stray light in the VIS range.

Expand 1 Items

Toluene in Hexane Solution Standard, Thermo Scientific

Supplier: Thermo Scientific

Thermo Scientific™ traceable Toluene in Hexane Solution Standard ensures accurate wavelength and absorbance results by verifying spectrophotometer resolution. Reference Material to qualify Spectral bandwidth in UV region.

Expand 1 Items

Refrigerated and Heated Bath/Circulators, Caron Products

Supplier: Caron Products

This refrigerated bath-circulator is designed to strike a special balance between strong cooling/heating/circulation capacity and compact cube dimensions, making it ideal for use with electron microscopes, rotary evaporators, lasers and spectrophotometers.

Expand 2 Items

Mini Cuvette Stirrers, FireflySci

Supplier: FIREFLYSCI, INC.

Mini Spectrophotometer Precision Cell Stirrer: This PTFE magnetic centrifugal stirrer fits into cuvettes with smaller apertures and volumes and provides rapid vertical and horizontal mixing with a minimum of vortexing when placed on a magnetic stirring machine.

Expand 1 Items

Filter Holder

Supplier: WORLD PRECISION INSTRUMENTS LLC

WPI’s filter holder for particulate absorption measurements is specially designed for field use. It is rugged and portable. It performs as well as a laboratory based spectrophotometer. It can be directly connected to WPI’s line of fiber optic spectrometers and light sources.

Expand 1 Items

Potassium chloride, crystal rectangle for spectrophotometry, polished, drilled

Supplier: International Crystal Labs

Potassium Chloride (KCl) is commonly used for infrared transmission crystal windows in gas and liquid sample cells used with infrared and FTIR spectrophotometers. KCl crystal windows are particularly useful for spatter barrier windows in CO2 lasers becaus

Expand 3 Items

Potassium chloride, crystal rectangle for spectrophotometry, polished

Supplier: International Crystal Labs

Expand 3 Items

Potassium chloride, crystal disk for spectrophotometry, polished

Supplier: International Crystal Labs

Expand 8 Items

TMB Substrate Solution, Thermo Scientific

Supplier: Invitrogen

Addition of sulfuric acid stop solution changes the color to yellow, enabling accurate measurement of the intensity at 450nm using a spectrophotometer or plate reader. This particular formulation is used in most of the Thermo Scientific Pierce ELISA Kits where it provides consistent performance for the sandwich ELISA technique.

Expand 1 Items

Rodent Rectal Temperature Probes

Supplier: WORLD PRECISION INSTRUMENTS LLC

Flexible Teflon microprobes are used for implantation in tissue, in spectrophotometer cuvettes, rectally in neonatal mice, in water baths, PCR thermal cyclers, etc. Also, measure animal rectal temperatures during surgical procedures and pyrogen testing or skin temperature measurement during exercise physiology studies.

Expand 2 Items

Ammonia Instrumental Test Nessler

Supplier: CHEMetrics

This kit requires the use of the V-2000 or V-3000 Photometer, an A-2024 SAM Photometer, or a spectrophotometer capable of accepting a 13 mm diameter round cell. Instrument sold separately. This test kit can be used to measure the concentration of ammonia in seawater or saltwater by using the A-1503 Accessory Solution Pack (sold separately).

Expand 1 Items

Sulfate Vacu-Vials® (0 to 100.0 ppm)

Supplier: CHEMetrics

Kit K-9203 comes in a cardboard box and contains everything needed to perform 30 tests: thirty ampoules, acidifier solution, activator powder, 25 ml sample cup, ampoule blank, and instructions. This kit requires the use of a CHEMetrics direct-readout Photometer or a spectrophotometer capable of accepting a 13 mm diameter round cell. Instrument sold separately.

Expand 1 Items

Chloride Instrumental Test 0 to 40 ppm

Supplier: CHEMetrics

Vacu-vials Kits require the use of the V-2000 Photometer or a spectrophotometer capable of accepting a 13 mm diameter round cell. Instrument sold separately. Although the test kit contains 30 ampoules, a fresh reagent ampoule blank must be prepared for each series of tests; therefore, the number of samples that can be tested with each kit will vary from a maximum of 29 to a minimum of 15.

Expand 1 Items

Ammonia Instrumental Test Nessler 0 to 20 ppm

Supplier: CHEMetrics

This kit requires the use of a CHEMetrics Direct-Readout Photometer or a spectrophotometer capable of accepting a 13 mm Ø round cell. Instrument sold separately. Range: 0 to 20 ppm, Method: Direct Nesslerization, Analysis Time: 2 minutes, Kit K-1533 comes in a cardboard box and contains everything needed to perform 30 tests: thirty ampoules, Stabilizer Solution, 25 ml sample cup, ampoule blank, and instructions.

Expand 1 Items

Stop Solution for TMB Substrates, Thermo Scientific

Supplier: Invitrogen

Stop Solution is 0.16M sulfuric acid for use with the ELISA substrate 3,3’,5,5’ - tetramethylbenzidine (TMB). In the presence of horseradish peroxidase (HRP) enzyme conjugates, TMB and peroxide react to produce a blue byproduct having maximum absorbance at 605nm. The color intensity is proportional to the amount of HRP activity, which in turn is related to the levels of target analyte in an optimized ELISA procedure. Addition of sulfuric acid stop solution changes the color to yellow (absorbance maximum at 450nm), stabilizing the color development to enable accurate measurement of the intensity at 450nm using a spectrophotometer or plate reader.