Hand refractometer is a precision instruments, which is used to determine the solid contents dissolved in liquids, such as sugar, salt, serum protein in blood and starch. Dissolved solids can be determined in seconds.
Hand Rotary Pump is suitable for delivering petrol, lube-oil kerosene and diesel. The pump is compact and lightweight. It is used for any type of oil. Its feature includes capacity of 20 liters/70 turns and suction pipe of 31.8mm(1.25inch)O.D.