Product Overview

15ml Glass Dropper is a larger-capacity borosilicate glass dropper for fast liquid transfer in industrial laboratories, research centers, and university teaching labs with larger sample volumes. Its 15ml capacity, 220mm length, 15mm body diameter, and thickened 1.2–1.4mm wall give the larger tube more handling stability than standard small droppers. The no-graduation design keeps the product focused on transfer speed instead of measurement reading.

Specifications

Item	Details
Product Name	15ml Glass Dropper
Product Type	Large-capacity no-graduation glass dropper
Material	3.3 borosilicate glass, silica content ≥81%
Total Capacity	15ml
Single Drop Volume	0.08ml, tolerance ≤±0.008ml
Length	220mm
Outer Diameter, Body	15mm
Outer Diameter, Tip	6mm
Wall Thickness	1.2–1.4mm
Temperature Resistance	Up to 320°C
Thermal Shock Resistance	Up to 160°C thermal shock
Pressure Test	0.4MPa hydrostatic pressure test
Sterilization	Up to 121°C
Marking Type	No printed graduations
Standard Packing	Thickened cardboard carton with foam cushioning, 20 units per carton

Key Features

Thickened 1.2–1.4mm walls and silica content ≥81% strengthen the larger glass tube during repeat washing, sterilization, and bench handling.
320°C temperature resistance and 160°C thermal shock resistance keep the tube steady through heat exposure and rapid temperature changes.
The 0.4MPa hydrostatic pressure test checks tube sealing before release, reducing leakage risk during larger-volume transfer.
The 6mm tip diameter gives the larger tube a wider transfer path while keeping drop output controlled for laboratory dispensing.

Customization Options

Capacity and tube size: 15ml standard version plus custom length, body diameter, tip diameter, and wall thickness from approved drawings or samples.
Drop output: tip opening and single-drop volume adjusted for the target liquid transfer rate.
Marking and identification: no-graduation version, printed scale version, product label, barcode, and carton mark options.
Fit and packing: tube mouth, bulb-fit position, foam protection, private-label carton, and batch label format.

Packaging and Order Information

Standard packing: thickened cardboard carton reinforced with foam cushioning, 20 units per carton.
Pre-production samples are supplied before bulk production; custom sample development cycle is 2 weeks.
Sample charge is waived; freight is charged separately.
We can share production photos or videos during manufacturing for bulk laboratory supply orders.
Quality-related damage claims are handled by dedicated after-sales staff based on shipment and batch records.

Quality Control

15ml Glass Dropper quality checks cover thickened wall uniformity, 15ml capacity consistency, 0.08ml drop output, smooth 6mm tip finish, and tube pressure integrity. Each batch is checked against the approved large-capacity specification, and cracked, scratched, uneven-walled, rough-tipped, leaking, or unstable-output tubes are removed before packing.

FAQ

Q1: Does the 15ml Glass Dropper include printed graduations?

A1: No. This version has a no-graduation tube for fast liquid transfer rather than measurement reading.

Q2: When should this 15ml model be chosen instead of a standard laboratory dropper?

A2: Choose it when larger sample volume, faster transfer, and stronger tube handling are more important than fine measurement reading.

Q3: What operating condition makes the thickened tube useful?

A3: The 1.2–1.4mm wall and larger 220mm body hold up to repeat washing, sterilization, and bench handling during larger-volume liquid transfer.

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

A4: Send photos of the tube, leakage or breakage position, affected quantity, outer-carton condition, and order number for shipment-batch checking.

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