Rubber Bulb Rubber Cork Butyrometer Stopper

Service Overview

1. Rubber Bulb (Pipette Filler Bulb)

Application

  • Used for suction and dispensing of liquids through glass pipettes.

  • Suitable for chemical, clinical, microbiology, dairy, and educational laboratories.

  • Safe alternative to mouth pipetting.

Compliance Standard

  • ISO 9001 manufacturing standards

  • Laboratory safety guidelines (GLP compliant use)

  • Material compliance (non-toxic rubber)

Product Description

Rubber bulb is a flexible, elastic suction device made from natural or synthetic rubber designed to attach securely to pipettes. It creates controlled vacuum pressure to aspirate and dispense liquids safely.

Available in plain bulb type or 3-valve (A-S-E) type pipette fillers.

Technical Specifications

Parameter

Specification

Material

Natural Rubber / Synthetic Rubber

Color

Red / Black / Orange

Type

Plain bulb / 3-valve bulb

Chemical Resistance

Moderate (not suitable for strong acids/solvents)

Elasticity

High flexibility

Temperature Range

0°C to 70°C (approx.)

Air-tight Seal

Yes

Apparatus is Supplied

  • Rubber bulb (single piece)

  • Individual or bulk packing

Optional Accessories

  • Glass pipettes (volumetric/graduated)

  • Pipette stands

  • 3-valve pipette filler assembly

  • Cleaning brush

Common Capacities Available

  • Small (for 1–5 mL pipettes)

  • Medium (for 10–25 mL pipettes)

  • Large (for 50 mL pipettes)

Dimensions & Weight (Approx.)

Type

Diameter

Length

Weight

Small

30–40 mm

50–60 mm

20–30 g

Medium

40–50 mm

60–70 mm

30–50 g

Large

50–60 mm

70–90 mm

50–80 g

2. Rubber Cork

Application

  • Sealing laboratory flasks, test tubes, and bottles.

  • Used in microbiology, chemistry, dairy, and research labs.

  • Suitable for temporary or semi-permanent sealing.

Compliance Standard

  • ISO 9001 manufacturing

  • Non-toxic rubber composition

  • Laboratory-grade material

Product Description

Rubber corks are tapered sealing plugs made of natural or synthetic rubber designed to fit tightly into glassware openings. Available in solid and single/multi-hole versions for tubing insertion.

Technical Specifications

Parameter

Specification

Material

Natural Rubber / Neoprene

Type

Solid / 1-hole / 2-hole

Shape

Tapered

Chemical Resistance

Moderate

Temperature Resistance

Up to ~100°C (short duration)

Surface

Smooth finish

Apparatus is Supplied

  • Rubber cork (as per selected size)

  • Bulk packaging

Optional Accessories

  • Glass tubing

  • Delivery tubes

  • Bunsen burner setups

  • Retort stands

Common Sizes Available

Typically numbered sizes:

  • No. 000 to No. 16 (standard lab sizes)

Dimensions & Weight (Approx.)

Size No.

Top Dia (mm)

Bottom Dia (mm)

Height (mm)

Weight

0

12

9

20

5–8 g

5

26

21

25

15–25 g

10

38

32

35

40–60 g

14

50

42

40

80–120 g

3. Butyrometer Stopper

Application

  • Used in dairy laboratories for Gerber method fat determination.

  • Seals butyrometer during centrifugation and heating.

  • Prevents leakage of acid and milk mixture.

Compliance Standard

  • IS 1224 (Part I) – Gerber Method for Milk Fat (India)

  • ISO dairy testing guidelines

  • Dairy lab GLP standards

Product Description

Butyrometer stopper is a precision-fitted rubber or polymer plug designed specifically for milk or cream butyrometers. It ensures a tight seal under centrifugal force and elevated temperature during fat testing procedures.

Available in rubber or synthetic acid-resistant compound.

Technical Specifications

Parameter

Specification

Material

Acid-resistant Rubber / Synthetic Polymer

Chemical Resistance

Sulfuric acid resistant (Gerber method)

Heat Resistance

Up to 65–70°C

Fit Type

Leak-proof tapered fit

Surface

Smooth finish

Reusable

Yes (if maintained properly)

Apparatus is Supplied

  • Butyrometer stopper (single piece)

  • Bulk packing (50/100 pcs)

Optional Accessories

  • Milk Butyrometer

  • Gerber centrifuge

  • Sulfuric acid dispenser

  • Butyrometer stand

  • Water bath

Common Capacities Available

Designed for:

  • Milk butyrometer (0–10% scale)

  • Cream butyrometer (0–50% scale)

Dimensions & Weight (Approx.)

Type

Top Dia

Bottom Dia

Height

Weight

Milk Type

18–20 mm

14–16 mm

20–25 mm

5–10 g

Cream Type

20–22 mm

16–18 mm

25–30 mm

8–15 g

Frequently Asked Questions