Hoefer SG500 - Manual (Page 11)

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3. Care and maintenance
The gradient maker should be cleaned
thoroughly with distilled water after use to
prevent polymerization or crystallization of
solutions in the chambers and stopcocks.
Do not use abrasives, acetone, pure alcohols
or organic solvents to clean this unit.
4. Ordering information
product qty. code no.
SG500 Gradient Maker, 1 SG500
500 ml total volume
Push-pull valve for salt gradient
1 SG500-10
Red outlet fitting, 4 mm 4 XPO10
Push-pull valve replacement 1 SG500-1