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To ensure optimal performance and longevity of bottle top dispensers, proper cleaning is essential, especially when switching chemicals, preparing for storage, or sending the dispenser for servicing. Certain chemicals can form crystals inside the dispenser, obstructing piston movement and liquid dispensing. Regular cleaning helps prevent these issues and prolongs the life of the dispenser.
When does a bottle top dispenser need to be cleaned?
- Immediately when the piston is difficult to move
- Before changing the reagent
- Before long-term storage
- Prior to dismantling the instrument
- Prior to autoclaving
- Prior to changing the valve
- Regularly when using liquids that form deposits (e.g. crystallizing liquids)
- Regularly, when liquids accumulate in the cap.
Steps to clean bottle top dispenser
Step 1: Neutralization
- Rinse the dispenser with a neutralizing liquid (acid or base) based on the chemical previously used.
- Dispense the liquid into a designated waste container and dispose of it following chemical waste guidelines.
Step 2: Initial Rinse
- Rinse the dispenser several times with demineralized water to remove residues before disassembling.
Step 3: Detailed Cleaning
- Use fresh water, mild detergent, and a soft brush to clean the piston and cylinder.
- Use pipe cleaners to clean the tubes thoroughly.
Step 4: Final Rinse and Drying
- Reassemble the dispenser and rinse it with demineralized water.
- Perform a final rinse with a 99% ethanol and 1% glycerol mixture to ensure complete drying of the inner tubes and cylinder.
A bottletop dispenser needs to be autoclaved when sterility is required for applications, especially in microbiology, pharmaceuticals, or clinical labs. It is also essential after dispensing hazardous or bioactive chemicals to ensure safety and avoid cross-contamination. Always follow the manufacturer’s guidelines for autoclaving. It is recommended to perform the autoclaving at 121°C (or 250°F) and 1 bar absolute (15 psi) with a holding time of at least 15 minutes. Make sure the Instrument is fully disassembled and cleaned before the autoclaving process.
For more details, you can check the Bottle Top Dispenser Product Guide.
