Ads
related to: extech ph100 exstik ph meter for saleacmetools.com has been visited by 10K+ users in the past month
ebay.com has been visited by 1M+ users in the past month
Search results
Results from the WOW.Com Content Network
Extech was founded in 1971. In October 2007, FLIR Systems acquired Extech for $40 million. [1] [2] In December 2009, FLIR Systems sold Extech Data Systems, a division of Extech which made portable printers. [1] [3] In November 2011, the company relocated to Nashua, New Hampshire. [4]
Beckman Model M pH Meter, 1937 [1] Beckman model 72 pH meter, 1960 781 pH/Ion Meter pH meter by Metrohm. A pH meter is a scientific instrument that measures the hydrogen-ion activity in water-based solutions, indicating its acidity or alkalinity expressed as pH. [2]
Arnold Orville Beckman (April 10, 1900 – May 18, 2004) was an American chemist, inventor, investor, and philanthropist. While a professor at California Institute of Technology, he founded Beckman Instruments based on his 1934 invention of the pH meter, a device for measuring acidity (and alkalinity), later considered to have "revolutionized the study of chemistry and biology". [1]
In and of themselves, pH indicators are usually weak acids or weak bases. The general reaction scheme of acidic pH indicators in aqueous solutions can be formulated as: HInd (aq) + H 2 O (l) ⇌ H 3 O + (aq) + Ind − (aq) where, "HInd" is the acidic form and "Ind −" is the conjugate base of the indicator. Vice versa for basic pH indicators ...
The Ames Reflectance Meter was the first blood glucose meter. It allowed patients with diabetes to self-monitor their blood glucose levels. The Ames Reflectance Meter was developed in 1970 by Anton H. Clemens. It had a needle that indicated the intensity of blue light reflected from a paper strip, called Dextrostix. The meter gave a ...
The Embraer EMB-500 Phenom 100 is a very light (VLJ) business jet designed and produced by the Brazilian aircraft manufacturer Embraer.Announced in November 2005, it made its first flight on 26 July 2007 and was awarded a type certificate in December 2008; the first aircraft was delivered the same month.
Ads
related to: extech ph100 exstik ph meter for saleacmetools.com has been visited by 10K+ users in the past month
ebay.com has been visited by 1M+ users in the past month