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LactoseLactose is hydrolysed to glucose and galactose, isomerised in alkaline solution to lactulose, and catalytically hydrogenated to the corresponding polyhydric alcohol, lactitol. Lactulose is a commercial product, used for treatment of constipation.

The Crooks radiometer (also known as a light mill) consists of an airtight glass bulb containing a partial vacuum

or calcium chloride and then the gas is slowly flowed through the tower

A graduated glass tube with a tap at one end

for the most precise laboratory practicals

isomerised in alkaline solution to lactulose

also called test tube rack

and start or control the speed of motors

Plated metal cone with hinged cutter blade set in slot

sodium carbonate offers dependable performance and efficiency

This is a long

also known as a culture tube or sample tube

but instead of having two blades