Bottle Trap And Hose Pipe For PP Lab Sinks

Bottle Tap & Hose Pipe for PP Sink, for Pharma & Lab

Chemical-Resistant Polymeric Construction: Fabricated from high-density polypropylene (PP) to withstand prolonged exposure to aggressive acids, bases, and organic solvents common in clinical research.

Leak-Proof Integrated Interface: Features a reinforced flexible hose pipe with a precision-threaded connector designed to ensure a hermetic seal with standard laboratory dispensing systems.

$5.36

Quick Answer: The Bottle Tap & Hose Pipe for PP Sink is an under-sink waste set for polypropylene laboratory sinks: a bottle trap (spelled ‘bottle tap’ in the listing) that holds a small pool of water as a seal against drain gases, plus a flexible hose pipe that carries waste from the trap to the drain.

The Trap Under a PP Lab Sink

A bottle trap is a compact cylinder fitted directly below the sink outlet. Waste water enters, drops towards the bottom of the bottle and rises again before leaving through a side outlet, so a pocket of water always stays inside. That standing water is the seal that stops drain odours, and any fumes in the drainage line, from rising into the lab through the plughole. A removable base lets the trap be opened to recover a dropped item or clear a blockage.

Polypropylene is the usual material for laboratory sinks because it resists a wide range of dilute acids, alkalis and salt solutions, and a PP sink is normally paired with PP waste fittings so the whole drainage run has similar chemical resistance. The hose pipe completes the bottle trap and hose pipe set: a flexible waste pipe leads from the trap outlet to the floor drain or waste line, which is easier to route under a bench or from a movable sink unit than rigid pipe.

The listing title spells the first part ‘bottle tap’; in sink plumbing the fitting under the outlet is the bottle trap, and that is how this set is described here. If a water tap for the sink was intended, please say so when enquiring.

Specifications

Item	Bottle trap with waste hose pipe
For use with	Polypropylene (PP) laboratory sinks
Function	Water seal against drain odours; flexible waste run to the drain
Access	Bottle traps usually have a removable base for cleaning
Material, outlet size and hose length	Confirm at enquiry

Applications

Completing new polypropylene sink units in chemistry, pharmacy and biology labs.
Replacing a cracked or leaking trap on an existing PP sink.
Movable or island sink units, where a flexible hose is easier to route than rigid pipe.
Pharmaceutical quality-control and wash-up areas that use PP sinks for rinse water.

Care & Handling

Run water for a few seconds after anything is poured away, so the seal in the trap is fresh water rather than reagent.
Unscrew the bottle base over a bucket to clear blockages, wearing gloves, since residues collect there.
Never pour solvents, concentrated acids or molten material into the sink; follow the lab’s chemical-waste rules instead.
Check the hose for kinks and sagging loops, which hold waste and slow drainage.

Why Choose LabEquip

Lab furniture makers, pharmaceutical QC departments and colleges fitting PP sinks buy this set to finish each sink station. LabEquip can supply it with other fittings from the General Lab Products range; send the sink outlet size through the contact page so the trap can be matched.

Frequently Asked Questions

What does a bottle trap do under a lab sink?

It keeps a small pool of water in its body after each use. This water seal stops drain odours and gases coming back up through the sink outlet, while waste still flows through.

Is the ‘bottle tap’ in the title a water tap?

The set is described here as the bottle trap and waste hose that fit under a PP sink. If you were looking for a water tap for the sink, say so when you contact LabEquip, and the correct fitting can be discussed.

Why should the trap match a PP sink?

Laboratory waste water can contain dilute acids, alkalis and salts. Using polypropylene fittings with a PP sink keeps the chemical resistance of the drain run consistent, so the trap does not become the weak point.

How is a blocked bottle trap cleared?

Place a bucket underneath, unscrew the base of the bottle, remove the debris, rinse, and screw the base back on hand-tight with its seal in place. Then run water to refill the seal.

Can solvents be poured down a PP sink?

No. Organic solvents, concentrated acids and other hazardous waste belong in labelled waste containers, not in the drain. Only rinse water and permitted dilute solutions should go down the sink.

Why does a lab sink sometimes smell?

Usually because the trap seal has dried out in a sink that is rarely used, or because residues have built up inside the trap. Running water regularly and cleaning the bottle fixes most cases.

Last Updated: September 2026