Combinatorial Chemistry > Standards Products & Reviews

The inoLab® benchtop meters of WTW, Weilheim, Germany, have been relaunched in April 2004. pH, DO, conductivity and multi-parameter instruments show not only a new colour but also enhanced functions and additionally, the family will have two new members, the new inoLab® pH/ION 735 and the high-performance inoLab® pH/ION/Conductivity 750 with two high-impedance inputs and an 8-pin socket for conductivity cells. So for almost  a…

WTW has reworked and improved the premium photometers photoLab S6 and S12. The Reference Beam Technology of the WTW filter photometers can technically hardly be topped, especially by the resulting stability and accuracy of measuring. Therefore the focus of the improvement has been on AQA and IQC functionality and also user defined methods for more indiviudal testing: Reading of results as transmittance in %T Storage of 10…

Looking for a portable but precise conductivity measurement to fulfil USP 27 regulations on pure water? For this purpose WTW, Weilheim, Germany, offers the Cond 340i, a precise hand held conductivity meter. It is a instrument including memory, datalogger and RS 232 interface with all features to perform conductivity measurements for every application. For USP measurements the temperature compensation can be switched off, a spe…

N-(Phosphonomethyl)glycine, TraceCERT ®

For generating neomycin-resistant feeder layers for the culture and selection of transfected undifferentiated ES and iPS cells

For generating puromycin-resistant feeder layers for the culture and selection of transfected undifferentiated ES and iPS cells

PESTANAL, analytical standard  

Ethyl Alcohol, Absolute, 200 Proof, Reagent, ACS is a pure, 99.5% minimum assay, undenatured ethyl alcohol (ethanol) that is ideal for a variety of research, industrial and educational uses. Spectrum certifies that the Reagent ACS grade is perfect for general laboratory use and offers a solvent that will yield repetitive, consistent results.

Ethyl Alcohol, Absolute, 200 Proof, Reagent, ACS is a pure, 99.5% minimum assay, undenatured ethyl alcohol (ethanol) that is ideal for a variety of research, industrial and educational uses. Spectrum certifies that the Reagent ACS grade is perfect for general laboratory use and offers a solvent that will yield repetitive, consistent results.

Water activity meter, indicates the free water content when food is stable, measures the possibility of microbial proliferation. Food formulators use water activity to predict how much moisture migration will affect their product, so that to choose suitable package and storage method to reduce the usage of antiseptics.

Synonyms: Chlorophenesin carbamate, Diphenylenimine, SKF 20091, Dibenzopyrrole, NSC 3498,9H-Carbazole, Dibenzo[b,d]pyrrole, Carprofen Related Compound A, 9-Azafluorene  

Surgical spirit, B.P. is a liquid prepared and used primarily for topical application. It is prepared from a special denatured alcohol solution and contains approximately 90 percent by volume of pure, concentrated ethanol (ethyl alcohol) or isopropyl alcohol (isopropanol).

Inorganic Ventures prepare almost any inorganic blend under the sun. That's what makes them a leading manufacturer of custom inorganic standards. It's their area of expertise, and perhaps the most prominent way in which they flex to your specs.

Model ACL-2 was designed for automatic measurement of Saybolt/ASTM color of petroleum products utilizing the Tri-Stimulus method as prescribed in ASTM D6045, which correlates with the conventional D156 and D1500 respectively. Just set up a sample and press the START key; the test result will be displayed on the fluorescent display module in just a few seconds, and since all the subjective judgment is eliminated, a perfect trac…