Name: Koehler Instrument - Density, Relative Density (Specific Gravity) or API Gravity
Brand: Koehler Instruments
SKU: PUY2SDYQ
Availability: InStock

Koehler Instrument - Density, Relative Density (Specific Gravity) or API Gravity

PUY2SDYQ

Brand: Koehler Instruments

Category: Density Meter

Industry: Material Science & Chemistry, Petroleum & Petrochemicals, Cement, Iron & Steel, Paint, Pigments & Polymers

The ASTM Hydrometers are precision instruments designed for determining density, relative density (specific gravity), and API gravity of crude petroleum, refined products, and petroleum mixtures. Manufactured to meet the exacting requirements of ASTM E100 and related international standards, they ensure high accuracy, repeatability, and traceability across all hydrocarbon testing applications.

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The ASTM Hydrometer series provides reliable, direct measurement of density and API gravity for petroleum and liquid hydrocarbon samples. Constructed in accordance with ASTM E100, these hydrometers are calibrated for use at standard reference temperatures (60°F / 15°C) and are available in multiple scales and subdivisions to accommodate all test method requirements.

The instruments are compatible with ASTM D287, D1298, D6074, and D6158, as well as API MPMS Chapter 9.1, IP 160, ISO 3675, and DIN 51757. They are ideal for laboratory and field testing environments where precise determination of product density, blending ratios, and quality control are essential.

Specialized API Gravity Hydrometers, Specific Gravity Hydrometers, and Thermohydrometers (with integrated thermometers) offer broad measurement versatility across various petroleum grades and temperature conditions. The ASTM Metric Thermohydrometers are calibrated in kg/m³ for use in international laboratories and comply with ISO and DIN standards.

Each hydrometer is constructed from high-clarity borosilicate glass, sealed for durability, and supplied with certified calibration for consistent performance.

Conforms to ASTM E100 and related international standards
High-precision glass construction for accurate and repeatable readings
Available in API Gravity, Specific Gravity, and Metric configurations
Standard reference temperature: 60°F (15°C) for petroleum testing
Multiple subdivisions for fine measurement accuracy
Thermohydrometer models include integrated thermometers for temperature compensation
Compatible with major ASTM and ISO test methods for petroleum density measurement
Ideal for crude oil, fuel oils, lubricants, and petrochemical samples
Traceable calibration certificate included with each instrument

Parameter	Specification
Applicable Standards	ASTM D287, D1298, D6074, D6158; API MPMS Ch. 9.1; IP 160; ISO 3675; DIN 51757
Reference Standard	ASTM E100
Measurement Types	Density, Relative Density (Specific Gravity), API Gravity
Construction	Borosilicate Glass, precision sealed
API Gravity Hydrometers	Standard temperature 60°F, subdivisions 0.1° API, length 330 mm
Specific Gravity Hydrometers (60/60°F)	Subdivisions 0.0005 or 0.001, length 260–330 mm
API Gravity Thermohydrometers	60°F, subdivisions 0.1° API, length 380 mm; thermometer scales °F: 0–150 (L), 30–180 (M), 60–220 (H)
ASTM Metric Thermohydrometers	Standard temperature 15°C, subdivisions 0.5 kg/m³, length 380 mm; thermometer scales °C: -20 to +65 (L), 0–85 (M), 20–105 (H)
Calibration	Factory calibrated and traceable to ASTM standards
Temperature Compensation	Via integrated thermometer (Thermohydrometer models)
Applications	Petroleum, lubricants, waxes, fuels, petrochemical blends, storage quality control

Crude Oil Testing – API gravity and density verification for refinery input
Fuel Quality Control – Monitor blending ratios and product conformity
Lubricant & Additive Testing – Ensure consistency in formulation
Petrochemical Processing – Density measurement for raw materials and intermediates
Storage & Distribution – Verify shipment and storage integrity
Calibration Laboratories – Standard reference for density measurement devices

Density, Relative Density (Specific Gravity) or API Gravity, Koehler Instrument

Koehler Instrument - Density, Relative Density (Specific Gravity) or API Gravity

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