APIAPI Hydrometers

API Hydrometer: API ASTM Plain Form, 29/41, 0.1

The API Hydrometer is an API ASTM Plain Form instrument with a range of 29/41 and scale divisions of 0.1. It has an overall height of 13 inches and is identified by manufacturer part number GW004H.

SKU 3G-OTH-368882

Brand

API

Item

Hydrometer: API ASTM Plain Form, 29/41, 0.1

Local availability & support

Delivery: Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment: Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

API

Manufacturer Part Number

GW004H 

Range

29/41 

Scale Type

API ASTM Plain Form 

Scale Divisions

0.1

Technical Documents

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API Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

The API Hydrometer is an API ASTM Plain Form instrument with a range of 29/41 and scale divisions of 0.1. It has an overall height of 13 inches and is identified by manufacturer part number GW004H.

Frequently Asked Questions

What is an API hydrometer used for?

An API hydrometer measures the specific gravity of petroleum liquids relative to water, following the American Petroleum Institute (API) scale. It is essential in refineries, fuel testing labs, and quality control for crude oil, gasoline, and diesel to determine density and grade.

What are the specifications of the API ASTM Plain Form hydrometer?

This API hydrometer has a range of 29/41 API, scale divisions of 0.1, and an overall height of 13 inches. It is an ASTM Plain Form instrument, manufacturer part number GW004H, designed for precise density measurement of petroleum products.

Where to buy an API hydrometer worldwide?

3G Electric supplies the API ASTM Plain Form hydrometer (MPN GW004H) worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for a quote and lead time; we source genuine industrial instruments for global customers.

How to select the right API hydrometer for petroleum testing?

Select an API hydrometer based on the expected API gravity range of your petroleum sample. For typical crude oils, a range of 29/41 with 0.1 scale divisions provides adequate resolution. Ensure the instrument meets ASTM standards and is calibrated for the test temperature.

Used in

Common applications for API

Petroleum refining — API ASTM Plain Form hydrometers (e.g., range 19/31) for measuring crude oil gravity during distillation

Fuel blending — API Combined Form hydrometers (e.g., range 39/51) with thermometer for real-time density checks in gasoline blending

Marine fuel handling — API hydrometers (e.g., range 40/80) for verifying bunker fuel API gravity at storage terminals

Quality control labs — API ASTM Plain Form hydrometers (e.g., range 49/61) for routine testing of light distillates

Field testing — API Combined Form hydrometers (e.g., range 29/41) for portable density measurement in pipeline sampling

Petrochemical production — API hydrometers (e.g., range 15/21) for monitoring solvent density in chemical processing

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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