Representative Image

Bohlender b.safe Waste Cap B53 with Funnel 2x UNF1/4", 1x GL14, 1x NPT1/8"

Brand:Bohlender

Specifications

Capillary connections
2
Connection for exhaust filter
1
Hose connections
1
Material
PE
No. of blind plugs
1
No. of fittings
2 x 1,6/ 2,2/ 3,2 mm
No. of olives
1
Thread
B 53
UNSPSC
41115700

$629.02

Inc. GST

Available soon

Product description

The Bohlender b.safe Waste Cap B53 with Funnel is engineered for safe and efficient solvent waste management in the laboratory. It features a freely movable PTFE insert for secure sealing and reliable connection of capillaries and hoses. The cap offers two UNF1/4" fittings suitable for capillaries with outer diameters of 1.6, 2.2, and 3.2 mm, one GL14 thread for attaching an optional b.safe exhaust air filter (filter not included), and one NPT1/8" hose connection compatible with tubing having inner diameters of 5.5 to 8 mm. The polypropylene filling funnel includes an integrated automatic stopcock with grip control; the stopcock opens by turning or pushing the grip and closes automatically when the grip is released, ensuring convenient, controlled, and spill-free liquid transfer.

Key Features:

  • Brand: Bohlender
  • Material: Durable PE cap, PP funnel, and PTFE insert for chemical resistance and long-lasting performance
  • Connections: 2x UNF1/4" fittings (for capillaries O.D. 1.6/2.2/3.2 mm), 1x GL14 thread, 1x NPT1/8" hose connection (for tubing I.D. 5.5 to 8 mm)
  • Funnel: PP filling funnel with integrated automatic stopcock featuring grip control for easy and safe operation
  • Thread Size: B53
  • Application: Ideal for solvent waste handling and exhaust filtration in laboratory settings

Scope of Supply:

  • Filling funnel with automatic stopcock and grip
  • Fittings (UNF 1/4")
  • Blind fitting (UNF 1/4")
  • Hose olive (NPT 1/8")

This Bohlender waste cap system is essential for maintaining a safe and efficient laboratory environment when managing solvent disposal and exhaust filtration.

Downloads

Accessories

Exhaust Filter, PP

ProductMaterialFilter sizeMfr#Part#AvailabilityPrice
PPSM 506-016.313 839In stock$217.94
PPMM 506-026.313 840In stock$295.90
PPLM 506-036.313 841In stock$379.18

Hose connectors for Waste Caps

ProductMaterialLengthMfr#Part#AvailabilityPrice
PP45 mmM 503-014.681 618$30.12
PTFE45 mmM 503-054.681 619$58.47
PP30 mmM 503-084.681 620$28.35
PP32 mmM 503-094.681 621$24.81
PP23 mmM 503-104.681 622$24.81
PP26 mmM 503-114.681 623$24.81
PP26 mmM 503-124.681 624$24.81
PP30 mmM 503-134.681 625$24.81
PP36 mmM 503-144.681 626$24.81
PTFE45 mmM 503-154.681 627$62.02
PP40 mmM 503-164.681 628$24.81
PP48 mmM 513-014.681 643$24.81
PP41 mmM 513-024.681 644$24.81
PP30 mmM 518-014.681 647$28.35

Compare similar models

b.safe Waste Cap B53 with Funnel 2x UNF1/4", 1x GL14, 1x NPT1/8"

Manufacturer P/N

M 353-35

Part Number

4.681 591

Manufacturer

Bohlender

b.safe Waste Cap B53 with Funnel 2x UNF1/4", 1x GL14, 1x NPT1/8"

Manufacturer P/N

M 353-25

Part Number

4.681 590

Manufacturer

Bohlender

Frequently asked questions

It is engineered for safe and efficient solvent waste management in the laboratory. It features a freely movable PTFE insert for secure sealing and reliable connection of capillaries and hoses. The cap offers two UNF1/4" fittings suitable for capillaries with outer diameters of 1.6, 2.2, and 3.2 mm, one GL14 thread for attaching an optional b.safe exhaust air filter (filter not included), and one NPT1/8" hose connection compatible with tubing having inner diameters of 5.5 to 8 mm. The polypropylene filling funnel includes an integrated automatic stopcock with grip control; the stopcock opens by turning or pushing the grip and closes automatically when the grip is released, ensuring convenient, controlled, and spill-free liquid transfer.

Insights

Explore
Burette vs Pipette: Key Differences and Which to Use

1 min read

Burette vs Pipette: Key Differences and Which to Use

This guide explains the practical difference between a burette and a pipette, two instruments that are often confused because both dispense measured volumes of liquid, but that are built for genuinely different jobs. It breaks down how a burette's stopcock and full-length graduated scale let an operator dispense a variable, watched volume and stop the instant a reaction reaches its endpoint, versus how a pipette (volumetric, graduated or micropipette) is built to transfer one known or pre-set volume in a single action. Rather than presenting the two as competing options, the piece frames them as complementary tools tied to different steps in a procedure: burettes for titration and any reaction where the target volume isn't known in advance, pipettes for sample preparation, dilutions and any step where the volume is already fixed.

Read full story
Top 5 Brands for Graduated Cylinders in 2026

1 min read

Top 5 Brands for Graduated Cylinders in 2026

This guide compares the five graduated cylinder brands most commonly used across Australian laboratories: Hirschmann Laborgeräte (DURAN® glass), Kartell (PMP plastic), ISOLAB Laborgeräte, BRAND (BLAUBRAND®) and VITLAB. Rather than treating graduated cylinders as interchangeable, it breaks down what actually separates them, Class A versus Class B accuracy tolerances, glass versus plastic construction, base stability and certification standards such as USP conformity, and explains which of these differences genuinely matter depending on the work.

Read full story
Top 5 Brands for Erlenmeyer Flasks in 2026

1 min read

Top 5 Brands for Erlenmeyer Flasks in 2026

This guide compares the five Erlenmeyer flask brands most commonly used across Australian laboratories today: DWK Life Sciences (DURAN®), ISOLAB Laborgeräte, LLG Labware, BRAND and Kartell. Rather than treating all Erlenmeyer flasks as interchangeable, it breaks down what actually separates them in practice, wall thickness consistency, thermal shock resistance, neck and closure compatibility, and material choice between borosilicate glass and polypropylene, and explains which of these differences matter for which kind of lab work.

Read full story

$629.02

Inc. GST