The superb range of quality polarimeter sample tubes manufactured by Optical Activity can be used in almost all polarimeter applications, and so, if you need to measure the tiniest amount of an expensive essential oil, or, if you have litres of sample, one of our tubes is sure to be suitable.
Our range is extensive and has been continually added to for over 20 years, but if you still do not
see the tube you need, we will design and make a special - just let us know your requirements.
Our tubes and cells use the internationally standard 30mm diameter collars. Tubes are to class A standard, as specified by I.C.U.M.S..A. Where the tube material is stainless steel, this is in all cases Type EN 58 (316) quality stainless steel. End windows are made from highly annealed strain free Crown glass, held in position by Nitrile O-rings (Viton O-rings are available to special order for use with solvents such as chloroform, which attack Nitrile). The seal is glass to metal or glass to glass; essential for accurate tube length determination. The O-rings simply relieve pressure on the end windows, preventing strain, and do not come into contact with the sample in ordinary use.
To obtain the best results from your polarimeter, it is important to select the most appropriate tube for the particular sample to be measured. If your polarimeter will accept a wide variety of types and sizes of tubes, it makes the instrument more versatile. All Optical Activity polarimeters can be used with tubes as long as 200mm, or as short as 5mm, with various tube bores (we offer from 8mm down to 1.5mm as standard), single sample or flow tubes, which may be temperature controlled or not, as required. If this choice proves confusing at first, the information provided on our specification pages are intended to assist you in choosing the best tube for your own use.