Wash bottle

A Wash Bottle is a flexible, squeeze-operated container used to provide a controlled stream of liquid for rinsing laboratory glassware, cleaning sensors, or diluting solutions. While most lab equipment is glass, wash bottles are manufactured from high-quality plastics to allow for the manual pressure required to dispense liquids through the integral delivery tube.

Key Product Features

• Flexible LDPE Body: Typically made from Low-Density Polyethylene (LDPE), which is translucent and highly flexible. This allows the user to easily control the flow rate and pressure of the stream by squeezing the bottle.

• One-Piece Polypropylene (PP) Cap: The screw cap and delivery tube are often molded as a single unit or tightly fitted to prevent leaks. The tube is angled to allow for easy dispensing into narrow-necked vessels like volumetric flasks.

• Fine-Point Tip: The delivery nozzle is precision-molded to produce a consistent, splash-free stream. On many models, the tip can be cut back to increase the flow rate if needed.

• Chemical Compatibility: Resistant to a wide range of common laboratory solvents, including distilled water, ethanol, methanol, and isopropanol.

• Venting Options: Professional versions often include a “Safety-Vented” cap to prevent pressure buildup and “dripping” when used with volatile solvents like acetone.

Technical Specifications

Safety Note: For safety, many labs use Color-Coded Caps or pre-labeled bottles to prevent cross-contamination:

• Blue: Distilled Water

• Red: Acetone

• Green: Methanol

• Yellow: Isopropanol

Primary Applications

• Glassware Rinsing: The final rinse of beakers, flasks, and pipettes with deionized or distilled water to ensure no residue remains.

• Analytical Transfers: Washing down the sides of a conical flask during titration to ensure all titrant is included in the reaction.

• Electrode Maintenance: Gently cleaning pH probes and other sensitive sensors with distilled water between measurements.

• Slide Preparation: Used in microscopy for rinsing slides during staining procedures.

Operational Tips

• Filling: Never fill the bottle to the very top; leave a small headspace of air to allow for easier squeezing and to prevent overflow when the cap is tightened.

• Cross-Contamination: Avoid touching the tip of the wash bottle to the inside of the vessel you are rinsing to maintain the purity of the wash liquid.

• Volatile Liquids: If using with Acetone or Alcohols, check the bottle periodically for signs of “stress cracking” or softening, and ensure the room is well-ventilated.

• Cleaning: Wash bottles themselves should be cleaned regularly. They are generally not autoclave-safe (unless specifically marked as PP); they should be cleaned with mild detergent and rinsed thoroughly.

Why Choose LDPE Wash Bottles?

The LDPE Wash Bottle is a simple but indispensable tool. Its unbreakable nature and precise flow control make it far more efficient than using a beaker or a standard spray bottle for the delicate task of maintaining a sterile and clean laboratory environment.