Safety Instructions for the Use of Bottle-Top Dispenser
The bottle-top dispenser may sometimes be used with hazardous materials, operations, and equipment. It is beyond the scope of the following contents to address all of the potential safety risks associated with its use in such applications. To consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use is the responsibility of the user of the bottle-top dispenser.
The do’s and don’ts
1. Operators need to read through the operating manual before the operation is provided by the manufacturer.
2. Wear protective clothing, eye protection, and gloves, etc. to prevent hazards.
3. Follow all the safety specifications and instructions provided by manufacturers.
4. The bottle-top dispenser is only for dispensing liquids, with strict regard to the defined limitations of use and operating limitations. If in doubt, contact the manufacturer or supplier.
5. Always use the bottle-top dispenser in such a way that neither the user nor any other person is endangered. Avoid splashes. Only dispense into suitable vessels. The discharge tube must always point away from the operator or others when dispensing.
6. Never press down the piston when the screw cap is pushed on.
7. When the dispensing cylinder is filled, do not remove the discharge tube
8. Reagents should be cleaned regularly, as they may accumulate in the closure cap of the discharge tube.
9. A bottle stand is needed for small bottles, in case of tipping over.
10. Do not carry the mounted bottle-top dispenser by the cylinder sleeve or the valve block, or the breakage or loosening of the cylinder may lead to personal injury from chemicals.
11. Instead of using force on the bottle-top dispenser, the operator should use smooth gentle movements to operate the piston upwards and downwards.
12. Accessories and spare parts only from original manufacturers can be used. Do not attempt to make any technical alterations.
13. Check the bottle-top dispenser every time before use. If the piston is difficult to move, sticking valves, or leakage is found, stop dispensing immediately.
Working limitations
The bottle-top dispenser is designed for dispensing liquids, and please note the following limits:
– 15 to 40℃ both for the dispenser and reagent
– 500 mbar-vapor pressure
– 2.2 g/cm3-density
– 500 mm²/s-kinematic viscosity
Materials
When the instrument is correctly used, the dispensed liquid comes into contact with only the following chemically resistant materials: Borosilicate glass, Al2O3, ETFE, PFA, FEP, PTFE, platinum-iridium; PP (closure cap).
Operating Exclusions
Never use the bottle-top dispenser with
-Liquids attacking ETFE, FEP, PFA, PTFE or Al2O3(e.g., dissolved sodium azide)
-Tetrahydrofuran
-The liquid that corrodes optical glass: hydrofluoric acid (HF)
-Liquid of platinum-iridium alloy for catalytic decomposition (H2O2)
-Nicotinic acid, trifluoroacetic acid, tetrahydrofuran
-Explosive liquid: carbon disulfide
-Suspension: Carbon-containing solution
Operating Limitations
Concentrated hydrochloric acid and concentrated nitric acid, chlorinated and fluorinated hydrocarbons, or chemical combinations that form deposits may make the piston difficult to move or may cause jamming (e.g., highly concentrated alkaline solutions, highly crystallizing solutions or concentrated saline solutions).
Make sure to avoid the buildup of static charge, when dispensing inflammable media, e.g., do not wipe instruments with a dry cloth; do not dispense into plastic vessels. If a sign of a potential malfunction is founded, for instance, the piston difficult to move, please do not use force. For the compatibility of the bottle-top dispenser for this special application (e.g., trace material analysis), the operator must check the User Manual or contact the manufacturer directly.
