You searched for: Standards

Meeting regulations in any industry, standards are essential for periodically checking the accuracy of equipment pieces. By comparing against the known values, output readings detect errors present and inform personnel adjustments are required. Once the settings of the manual or automatic instruments have returned to zero, the reestablished conditions will yield optimal working performance. Calibrating with concentrated standards eliminates the possibility that environmental changes will induce instrumental miscalculation when accuracy matters most.

Sort By

« ‹ 1560 1561 1562 › »

Total Phenolics QC Concentrate, Certified Reference Material

Supplier: SPEX CERTIPREP LLC

Meet or exceed performance criteria with QC samples.

Expand 1 Items

LaMotte® Electronic Soil Outfit

Supplier: LaMotte

Includes Colorimeter, TDS, and pH Meters

Expand 2 Items

Total Cyanide QC Concentrate, Certified Reference Material

Supplier: SPEX CERTIPREP LLC

Meet or exceed performance criteria with QC samples.

Expand 1 Items

Residual Free Chlorine QC Concentrate, Certified Reference Material

Supplier: SPEX CERTIPREP LLC

Meet or exceed performance criteria with QC samples.

Expand 1 Items

EDB/DBCP/TCP QC Concentrate

Supplier: SPEX CERTIPREP LLC

Meet or exceed performance criteria with QC samples.

Expand 1 Items

Oxygenates QC Concentrate

Supplier: SPEX CERTIPREP LLC

Meet or exceed performance criteria with QC samples.

Expand 1 Items

Mercury QC Concentrate

Supplier: SPEX CERTIPREP LLC

Meet or exceed performance criteria with QC samples.

Expand 1 Items

Base/Neutrals QC Concentrate

Supplier: SPEX CERTIPREP LLC

Meet or exceed performance criteria with QC samples.

Expand 1 Items

Silica Wastewater QC Concentrate, Certified Reference Material

Supplier: SPEX CERTIPREP LLC

Meet or exceed performance criteria with QC samples.

Expand 1 Items

8240/8260 Calibration Check Mix (6 components), Restek

Supplier: Restek

Contains: Chloroform (67-66-3); 1,1-Dichloroethene (75-35-4); 1,2-Dichloropropane (78-87-5); Ethylbenzene (100-41-4); Toluene (108-88-3); Vinyl chloride (75-01-4)

Expand 1 Items

Organic Reference Standards, Folic Acid, RS, USP

Supplier: USP

(50 mg) (Calcium Formyltetrahydrofolate)

Expand 1 Items

Calibration Mix D3710-95 (16 components), Restek

Supplier: Restek

These calibration mixtures are made with pure, highly characterized neat material and are prepared using NIST-traceable balances and weights. Each ampul is supplied with a data sheet indicating the exact concentration and a sample chromatogram.

Expand 1 Items

524 Calibration Mix #8 (12 components), Restek

Supplier: Restek

Mix Contains: Carbon disulfide (75-15-0); Chloroacetonitrile (107-14-2); 1-Chlorobutane (Butyl chloride) (109-69-3); trans-1,4-Dichloro-2-butene (110-57-6); 1,1-Dichloro-2-propanone (513-88-2); Diethyl ether (ethyl ether) (60-29-7); Hexachloroethane (67-72-1); Iodomethane (methyl iodide) (74-88-4); Methacrylonitrile (126-98-7); Methyl tert-butyl ether (MTBE) (1634-04-4); 2-Nitropropane (79-46-9); Propionitrile (107-12-0).

Expand 1 Items

8270 Calibration Mix #5, Revised (18 components), Restek

Supplier: Restek

Contains: Acenaphthene (83-32-9); Acenaphthylene (208-96-8); Anthracene (120-12-7); Benz(a)anthracene (56-55-3); Benzo(a)pyrene (50-32-8); Benzo(b)fluoranthene (205-99-2); Benzo(ghi)perylene (191-24-2); Benzo(k)fluoranthene (207-08-9); Chrysene (218-01-9); Dibenz(a,h)anthracene (53-70-3); Fluoranthene (206-44-0); Fluorene (86-73-7); Indeno(1,2,3-cd)pyrene (193-39-5); 1-Methylnaphthalene (90-12-0); 2-Methylnaphthalene (91-57-6); Naphthalene (91-20-3); Phenanthrene (85-01-8); Pyrene (129-00-0)

Expand 1 Items

524 Calibration Mix #7 Kit, Restek

Supplier: Restek

Contains 1 ml each of these mixtures: 524 calibration mix #7A, 524 calibration mix #7B. calibration mix #7A contains Acetone (67-64-1), 2-Butanone (MEK) (78-93-3), 2-Hexanone (591-78-6), 4-Methyl-2-pentanone (MIBK) (108-10-1), Tetrahydrofuran (109-99-9); calibration mix #7B contains Acrylonitrile (107-13-1)
Allyl chloride (3-chloropropene) (107-05-1), Ethyl methacrylate (97-63-2), Methyl acrylate (96-33-3), Methyl methacrylate (80-62-6), Nitrobenzene (98-95-3), Pentachloroethane (76-01-7).

Expand 1 Items

Organic Reference Standard, Aurothioglucose, USP

Supplier: USP

(100 mg)

Expand 1 Items

Mandelic Acid, United States Pharmacopeia (USP) Reference Standard

Supplier: USP

(500 mg)

Expand 1 Items

Organic Reference Standards, Idarubicin Hydrochloride, RS, USP

Supplier: USP

(50 mg)

Expand 1 Items

Nitrogen-Ammonia Standard Solutions

Supplier: Hach

For accuracy checks in ammonia nitrogen determinations.

Expand 4 Items

Cupric Sulfate CS, USP/EP Blue Primary Solution, Ricca Chemical Company

Supplier: Ricca Chemical

Cupric Sulfate CS, USP/EP Blue Primary Solution, Ricca Chemical Company

Expand 3 Items

Organic Reference Standard, Alpha Tocopheryl Acetate (Vitamin E acetate), RS, USP

Supplier: USP

(250 mg) (Vitamin E Acetate)

Expand 1 Items

MAC Rare Earth Set for TEM, Electron Microscopy Sciences

Supplier: Electron Microscopy Sciences

This set consists of 14 rare earth compounds dispersed onto holey carbon films (3.05 mm, 400# copper grid).

Expand 1 Items

NIST 1930 VIS Photometric Accuracy Neutral Density Kit, FireflySci

Supplier: FIREFLYSCI, INC.

Firefly's equivalent of the NIST SRM 1930 calibration reference kit for testing photometric accuracy in the VIS range (400 to 700 nm).

Expand 1 Items

Organic Reference Standard, Hydroxypropyl Betadex, RS, USP

Supplier: USP

(200 mg)

Expand 1 Items

PS4R Reflected Light Micrometer Scale, Electron Microscopy Sciences

Supplier: Electron Microscopy Sciences

Reflected light calibration slide with 0.1" length scale subdivided into 0.001" divisions.

Expand 4 Items

NG30 Matthews Spray Droplet Sizing Reticle, Electron Microscopy Sciences

Supplier: Electron Microscopy Sciences

Spray droplet sizing reticle for size and distribution assessments of aersol droplets. Used in conjunction with a 40x Microscope for direct measurements of droplets from 50 to 400 μm diameter.