Representative Image

Bohlender b.safe Cap S40, with Stopcocks 2x UNF1/4"

Brand:Bohlender

Specifications

Capillary connections
1
Material
PPS
No. of fittings
1 x 3,2 mm
No. of stopcocks
1
Thread
S 40
UNSPSC
41115700

$315.39

Inc. GST

Available soon

Product description

The Bohlender b.safe Cap S40 with Stopcocks 2x UNF 1/4" is a high-quality laboratory screw cap designed for safe and precise fluid handling. Made from chemically resistant PPS, it features a freely movable PTFE insert and two UNF 1/4" female threads for connecting capillary tubing with an outer diameter of 3.2 mm. Each connection is equipped with an integrated stopcock, allowing for individual flow control. The cap also includes a b.safe air valve with a service life indicator for safe venting and pressure equalization. Additionally, it features an extra capillary connector on the bottom side of the lid, enhancing system flexibility.

Key Features:

  • Brand: Bohlender
  • Material: PPS with freely movable PTFE insert
  • Thread Size: S40
  • Capillary Connections: 2 x UNF 1/4" female threads (for 3.2 mm OD tubing)
  • Integrated Stopcocks: 2 for precise individual flow control
  • Additional Feature: Extra capillary connector on the bottom of the lid
  • Air Valve: b.safe air valve with service life indicator
  • Application: Ideal for controlled fluid transfer in analytical and preparative lab environments
  • Packaging: Sold individually

Scope of Supply:

  • 2 x PFA fittings (top and bottom)
  • 2 x integrated stopcock connections
  • 1 x b.safe air valve with service life indicator

This cap is an essential solution for laboratories requiring secure, controlled, and customizable fluid connections for capillary systems.

Downloads

Accessories

Air valves, PP

ProductMaterialØMfr#Part#AvailabilityPrice
PP20 mmM 505-016.313 842In stock$104.54
PP20 mmM 505-026.313 843In stock$354.38
PP20 mmM 505-056.313 844In stock$1,530.90

Fittings, PFA, for Caps and Waste Caps

ProductMaterialColourMfr#Part#AvailabilityPrice
PFAGreenM 501-064.681 835$90.37
PFAVioletM 501-114.681 836$90.37
PFAGreyM 501-124.681 837$90.37
PFAWhiteM 501-154.681 838$90.37
PFABlueM 501-164.681 839$90.37
PFARedM 501-174.681 840$90.37
PFAYellowM 501-184.681 841$88.59

Frequently asked questions

It is a high-quality laboratory screw cap designed for safe and precise fluid handling. Made from chemically resistant PPS, it features a freely movable PTFE insert and two UNF 1/4" female threads for connecting capillary tubing with an outer diameter of 3.2 mm. Each connection is equipped with an integrated stopcock, allowing for individual flow control. The cap also includes a b.safe air valve with a service life indicator for safe venting and pressure equalization. Additionally, it features an extra capillary connector on the bottom side of the lid, enhancing system flexibility.

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

$315.39

Inc. GST