These three new models of variable speed stirrers are electronically controlled and are designed to handle a range of viscosities. Available speeds range from 0 to 6,000 rpm. All three models feature overload protection with a manually resetable circuit breaker. The shaft and propeller are made of stainless steel for easy cleaning and resistance to most acids and chemicals.

Arrow Engineering.

Featuring more than 65 chemicals available in high purity, reagent and technical grades, this 1988 catalog includes such specialty chemicals as germanium compounds, purified carbamates, silanes, industrial intermediates, high-purity inorganic compounds and organometallics. The company offers custom chemical synthesis and a free evaluation of a potential client’s proposed synthetic route for compounds for which bids are being solicited.

Hach Synthesis, Inc.

Centrifugal partition chromatography (CPC) is a liquid chromatographic technique that employs liquid/liquid partition counter/ current distribution to fractionate complex chemical mixtures. This technique is particularly advantageous for isolating...

Interested in reading more?

Become a Member of

Receive full access to digital editions of The Scientist, as well as TS Digest, feature stories, more than 35 years of archives, and much more!
Already a member?