We do not offer international shipping to countries within the European Union
We can only ship non-hazardous products to Rest of World
Compare all Pack Sizes
Unfortunately, we are not currently accepting orders for Northern Ireland, Jersey and Guernsey.
We can only ship to the following postcodes where a Royal Mail postal option has been chosen at checkout.
AB, DD, DG3, DG4, DG6 - DG9, EH, FK, G, HS, IM, IV, KA, KW, KY, ML, PA, PH, PO30 - PO41, TD, TR21 - TR25, ZE
Please note:
- These hydrometers are made to order and have a lead time of approximately 5 weeks
- If you require a calibration certificate, these can be provided at an additional cost and will need to be ordered alongside the hydrometer
The Twaddle scale is a simplified scale based on specific gravity where 0° Twaddle equates to SG60/60°F of 1.00 (that of water) and each degree Twaddle equals 0.005°SG. These hydrometers are adjusted for use at 15.6°C (60°F) for medium surface tension liquids. All hydrometers can be supplied with UKAS certification, certificate traceable to Recognised National Standard or Statement of Conformity, if required.
High-Quality Materials
Made from durable soda glass with steel shot ballast and synthetic wax resin for stability.
Wide Measurement Range
Covers liquid density measurements from 0.0 to 170.0 °Twaddle (see table for details).
Precision Accuracy
Calibrated to ±1 °Twaddle with 1 °Twaddle divisions for reliable results.
Optimised for Laboratory Use
Designed for use at 15.6°C (60°F) to ensure consistent performance.
Compact and Sturdy Design
Maximum length of 160mm with a 18mm bulb diameter for easy handling.
Protective Storage
Supplied in a resealable plastic tube, weighing approximately 21g (including 8g for the tube).
Manufactured in the UK
Produced to high-quality standards for professional and industrial applications.
Material: Soda glass, steel shot ballast, synthetic wax resin
Ranges: See table
Max Length: 160mm
Bulb Diameter: 18mm
Accuracy: +/- 1 °Twaddle
Divisions: 1 °Twaddle
Approx Weight: 21g (including 8g protective plastic tube)
| Twaddle number | Range (°Twaddle) | Product number |
| 1 | 0-24 | 10-101-0 |
| 2 | 24-48 | 10-102-0 |
| 3 | 48-74 | 10-103-0 |
| 4 | 74-102 | 10-104-0 |
| 5 | 102-138 | 10-105-0 |
| 6 | 138-170 | 10-106-0 |
Pack Size:
Price: £
Quantity:
We can also accept a bank transfer (UK Only)
