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API Hydrometer: API ASTM Combined Form, 59/71, 0.1, Glass - API Hydrometers
APIAPI Hydrometers

API Hydrometer: API ASTM Combined Form, 59/71, 0.1, Glass

The API Hydrometer is an API ASTM Combined Form hydrometer with a 59/71 range and 0.1 scale divisions, featuring a +30 / 180ºF Mercury Thermometer. This glass instrument has a 15-inch overall height and is identified…

SKU 3G-OTH-368879

Brand
API
Item
Hydrometer: API ASTM Combined Form, 59/71, 0.1, Glass
Part Number
GW057HM
Category
API Hydrometers
Available to Order
Also known as:GW057HMAPI
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

API
Manufacturer Part Number
GW057HM
Range
59/71
Features
+30 / 180ºF Mercury Thermometer
Scale Type
API ASTM Combined Form
Scale Divisions
0.1

Technical Documents

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3G Electric (S) Pte. Ltd. — Singapore

Product Description

The API Hydrometer is an API ASTM Combined Form hydrometer with a 59/71 range and 0.1 scale divisions, featuring a +30 / 180ºF Mercury Thermometer. This glass instrument has a 15-inch overall height and is identified by manufacturer part number GW057HM.

Frequently Asked Questions

What is the API Hydrometer used for?

The API Hydrometer is used to measure the specific gravity of petroleum products and crude oils per ASTM standards. Its combined-form scale and built-in mercury thermometer allow direct temperature-compensated readings in laboratory or field testing environments.

What are the specifications of the API Hydrometer?

This API ASTM Combined Form hydrometer has a range of 59/71 with 0.1 scale divisions. It includes a +30 / 180ºF mercury thermometer, is made of glass, and has a 15-inch overall height. The manufacturer part number is GW057HM.

Where to buy the API Hydrometer worldwide?

3G Electric supplies the API Hydrometer (GW057HM) worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time.

How to use the API Hydrometer correctly?

Ensure the hydrometer and sample are at the same temperature before immersion. Gently lower the glass instrument into the test jar, spin to release air bubbles, and read the scale at the bottom of the meniscus. The built-in mercury thermometer provides simultaneous temperature measurement.

Used in

Common applications for API
Power plants — API control rods for flanged expansion joints in steam piping systems to manage thermal expansion.
Chemical processing — API control rods for single bulb expansion joints in corrosive fluid lines to prevent over-extension.
Oil and gas refineries — API control rods for double bulb expansion joints in high-pressure piping to control axial movement.
HVAC systems — API control rods for flanged expansion joints in large ductwork to accommodate temperature changes.
Water treatment — API control rods for expansion joints in pump discharge lines to restrict motion during pressure surges.
Industrial steam distribution — API control rods for single bulb expansion joints in 12-inch headers to ensure controlled expansion.
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API Products

3G Electric supplies API api hydrometers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Glass hydrometer with API ASTM Combined Form scale, 29/41 range, and 0.1 scale divisions. Features a 0 to 150°F thermometer and overall height of 15 inches. Used for measuring specific gravity of petroleum products and crude oil in laboratory and refinery settings
API
Glass hydrometer with API ASTM Combined Form scale, 29/41 range, and 0.1 scale divisions. Features a 0 to 150°F thermometer and overall height of 15 inches. Used for measuring specific gravity of petroleum products and crude oil in laboratory and refinery settings

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