Product Overview

Glass Dropper with Rubber Teat is a 4ml borosilicate transfer dropper with a removable food-grade nitrile rubber teat. Use it for liquid transfer tasks that need a tight seal and controlled squeeze action.

Specifications

Item	Details
Product Name	Glass Dropper with Rubber Teat
Product Type	Glass transfer dropper with removable rubber teat
Glass Material	3.3 borosilicate glass, silica content ≥80%
Teat Material	Food-grade nitrile rubber
Maximum Temperature, Glass Body	300°C
Length	160mm
Outer Diameter, Body	11mm
Outer Diameter, Tip	4.5mm
Total Capacity	4ml
Droplet Size	0.05ml per drop, error ≤±0.005ml
Teat Inner Diameter	3mm
Scale Marks	No scale marks; transfer-focused design
Standard Packing	80 pieces per box with foam padding

Key Features

Food-grade nitrile rubber resists odor, aging, and corrosion, keeping the teat elastic during repeated squeeze-and-release use.
The 3mm teat inner diameter and matched glass neck create a tight fit, reducing leakage and evaporation in daily transfer or temporary liquid holding.
3.3 borosilicate glass handles heat and chemical contact during laboratory cleaning, while the glass body supports 121°C sterilization.
The removable rubber teat separates from the glass body for cleaning, reducing residue buildup after repeated reagent transfer.

Customization Options

Glass tube dimensions: capacity, length, body diameter, tip diameter, and neck fit produced from approved drawings or physical samples.
Rubber teat version: teat inner diameter, material color, bulb shape, and fit matched to the glass tube and liquid-transfer task.
Marking and label version: standard unmarked tubes, private labels, barcode labels, carton marks, and product codes for distributor orders.
Packing version: box quantity, foam protection, inner label, and outer carton information matched with the approved shipment plan.

Packaging and Order Information

Standard packing: 80 pieces per box with foam padding.
Pre-production samples are prepared before bulk production; custom sample development cycle is 2 weeks.
Order execution is based on the approved tube capacity, teat fit, packing quantity, label information, and carton mark details.
We can share production photos or videos during manufacturing for bulk laboratory supply orders.

Quality Control

Glass Dropper with Rubber Teat quality checks cover tube clarity, wall uniformity, drop output, tip finish, rubber teat rebound, and neck-to-teat sealing fit. Finished sets are compared with the approved tube and teat specification, and pieces with glass defects, rough tips, loose teat fit, weak rebound, or leakage risk are removed before packing.

FAQ

Q1: When should the rubber teat model be chosen?

A1: Use it when controlled squeeze action, temporary liquid holding, and tighter neck sealing are needed in daily reagent transfer.

Q2: Can the rubber teat be removed?

A2: Yes. The teat is removable for cleaning, replacement, or separate checking before reuse.

Q3: What should be checked for liquid compatibility?

A3: Confirm the liquid type, contact time, and required teat color or rubber version so the nitrile teat and glass tube fit the transfer task.

Q4: What information do you need if leakage or broken glass is found after arrival?

A4: Send photos of the glass tube, rubber teat, leakage position or breakage, affected quantity, and order number for shipment-batch checking.

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