Density and Specific Gravity Hydrometers to BS 718 and Other National and International Standards. These hydrometers are ideal for use in laboratories, and are made in accordance with national and international standards.
These hydrometers feature clear, easy-to-read double scales and are built to exacting standards.
Density hydrometers, calibrated in g/ml at 20°C, conform to BS 718 specifications or international equivalents such as ISO 649, DIN 12791, NF B 35-511, and JIS B 7525.
Specific gravity hydrometers, calibrated at S60/60°F, follow ISO 650 (equivalent to the now-obsolete BS 718:1961) or ASTM E100 standards.
These hydrometers are available calibrated for liquids of low, medium and high surface tensions. Low ST calibration is available for hydrometers measuring from 0.600 to 1.300, medium ST calibration is available for hydrometers measuring above 0.960, and high ST calibration is available for hydrometers measuring above 1.000.
.avif)
Density Hydrometers, scale divisions 0.0005 g/ml.
Low ST: DB3339/ Medium ST: DC3339/ High ST: DD3339/
Specific Gravity Hydrometers, scale divisions 0.0005 S60/60°F.
Low ST: DX3339/ Medium ST: DY3339/ High ST: DZ3339/
Density Hydrometers, scale divisions 0.001 g/ml.
Low ST: DB2746/ Medium ST: DC2746/ High ST: DD2746/
Specific Gravity Hydrometers, scale divisions 0.001 S60/60°F.
Low ST: DX2746/ Medium ST: DY2746/ High ST: DZ2746/
Density Hydrometers, scale divisions 0.002 g/ml.
Low ST: DB2563/ Medium ST: DC2563/ High ST: DD2563/
Specific Gravity Hydrometers, scale divisions 0.002 S60/60°F.
Low ST: DX2563/ Medium ST: DY2563/ High ST: DZ2563/
Density Hydrometers, scale divisions 0.002 g/ml.
Low ST: DB1958/ Medium ST: DC1958/ High ST: DD1958/
Specific Gravity Hydrometers, scale divisions 0.002 S60/60°F.
Low ST: DX1958/ Medium ST: DY1958/ High ST: DZ1958/
These are hydrometers covering ranges of 0.050 S60/60°F.
Long hydrometers are 335 mm long, with 0.0005 scale divisions.
Short hydrometers are 270 mm long, with 0.001 scale divisions.
To specify a product use the prefix shown, followed by the ASTM hydrometer number.
Long Plain Form: DU3339/ Short Plain Form: DU2746/
Hydrometers for Oil and Petroleum to International Standards
These hydrometers are specifically designed for the testing of oil and petroleum products, and are made in accordance with national and international standards. They can be supplied with calibration certificates, or certificates showing traceability to national NAMAS standards.
These hydrometers are available calibrated for liquids of low surface tensions. BS 718 hydrometers in the SP series are available in ranges measuring from 0.600 to 1.100 g/ml at 15°C. They can also be made measuring g/ml at 20°C if that is required.
To specify a product use the prefix shown, followed by the start of the range. For example a 0.700/0.750 L50SP density hydrometer would be DA3339/070.
Density Hydrometers, scale divisions 0.0005 g/ml at 15°C.
Maximum permitted error ±0.0003 g/ml. Low ST: DA3339/
Density Hydrometers, scale divisions 0.001 g/ml at 15°C.
Maximum permitted error ±0.0006 g/ml. Low ST: DA2746/
Density Hydrometers, scale divisions 0.001 g/ml at 15°C.
Maximum permitted error ±0.001 g/ml. Low ST: DB2563/
A special hydrometer for use with aviation fuel, covering the range 0.775-0.825 g/ml. Available in L50SP, M50SP and S50SP forms.
L50SP: DA3339/775 M50SP: DA2746/775 S50SP: DA1946/775
These are 335 mm long hydrometers, with a range of 0.050 S60/60°F and 0.0005 scale divisions.
Maximum permitted error ±0.0005 S60/60°F.
To specify a product use the prefix shown, followed by the ASTM hydrometer number.
Long Plain Form: DU3339/
These are hydrometers measure API Gravity for Petroleum Products.
Long hydrometers are 335 mm long, with a range of 11°API and 0.1° scale divisions.
Maximum permitted error ±0.1°.
Short hydrometers are 168 mm long, with a range of 6°API and 0.1° scale divisions.
Maximum permitted error ±0.2°.
To specify a product use the prefix shown, followed by the ASTM hydrometer number.Long Plain Form: DU3313/ Short Plain Form: DU1709/
These commercial grade hydrometers are suitable for a wide variety of purposes.
They are ideal for use as range finders in laboratories, or in general use when the highest precision is not required.
These hydrometers feature clear, easy-to-read double scales, with a choice between density (g/ml at 20°C) or specific gravity scales, calibrated at either 15.6°C (S60/60°F) or 28.9°C (S84/84°F). They are calibrated for low surface tension liquids below 1.000 and medium surface tension above 1.000, and are designed for accurate readings taken at the horizontal surface of the liquid.
These general-purpose hydrometers have individual serial numbers and datum lines, and are suitable for certification.
To specify a product use the prefix shown, followed by the start of the range. For example, a 1.000/1.300 S60/60°F range finder would be GF2578/100. (Use GHxxxx/ prefix for S84/84°F).
These hydrometers are 160 mm long, with 0.001 scale divisions.
All ranges available from 0.700/0.760 to 1.840/1.900.
S60/60°F (15.6°C): GF1648/ Density at 20°C: GG1648/
These hydrometers are 230 mm long, with 0.002 scale divisions.
All ranges available from 0.600/0.700 to 1.900/2.000.
S60/60°F (15.6°C): GF2563/ Density at 20°C: GG2563/
These hydrometers are 250 mm long, with 0.002 scale divisions.
All ranges available from 0.600/0.800 to 1.800/2.000.
S60/60°F (15.6°C): GF2573/ Density at 20°C: GG2573/
These hydrometers are 250 mm long, with 0.005 scale divisions.
All ranges available from 0.700/1.000 to 1.600/1.900.
S60/60°F (15.6°C): GF2578/ Density at 20°C: GG2578/
These hydrometers are 250 mm long, with 0.005 scale divisions.
Ranges available: 0.700/1.200, 1.000/1.500, 1.500/2.000.
S60/60°F (15.6°C): GF2586/ Density at 20°C: GG2586/
These hydrometers are 380 mm long, with 0.010° scale divisions.
S60/60°F (15.6°C): GF3899/070 Density at 20°C: GG3899/070
These hydrometers are 250 mm long, with 0.010° scale divisions.
S60/60°F (15.6°C): GF2592/100 Density at 20°C: GG2592/100
These hydrometers feature clear, easy-to-read double scales, calibrated at 60°F (15.6°C) or 84°F (28.9°C).
They are calibrated for medium surface tension and designed for readings taken at the horizontal surface of the liquid.
Each hydrometer includes a serial number and datum line, making them suitable for certification and traceability.
These hydrometers are available in the following ranges in either short or long versions:
Twaddle No.1, 0-24°
Twaddle No.2, 24-48°
Twaddle No.3, 48-74°
Twaddle No.4, 74-102°
Twaddle No.5, 102-138°
Short hydrometers are 160 mm long, with 1.0° scale divisions.
To specify a product use prefix GT1642/, followed by range number.
Short hydrometers are 160 mm long, with 1.0° scale divisions.
To specify a product use prefix GU1642/, followed by range number.
Long hydrometers are 230 mm long, with 0.5° scale divisions.
To specify a product use prefix GT2335/, followed by range number.
Long hydrometers are 230 mm long, with 0.5° scale divisions.
To specify a product use prefix GU1635/, followed by range number.
These hydrometers feature clear, easy-to-read double scales calibrated at 15°C, 60°F, or 84°F.
They are calibrated for medium surface tension and designed for readings taken at the horizontal surface of the liquid.
Each hydrometer includes a serial number and datum line, making them suitable for certification and traceability.
These hydrometers measure degrees Baume (modulus 145) for liquids heavier than water.
To specify a product use the prefix shown, followed by start of the range. For example, a hydrometer measuring 20-40°Baume at 60°F would be GB2530/20.
These hydrometers are 250 mm long, with 0.1° scale divisions.
Available from 0/10° to 60/70°, calibrated at various temperatures.
60°F: GB2520/ 84°F: GC2520/ 15°C: GA2520/
These hydrometers are 250 mm long, with 0.2° scale divisions.
Available from 0/20° to 50/70°, calibrated at various temperatures.
60°F: GB2530/ 84°F: GC2530/ 15°C: GA2530/
These hydrometers are 250 mm long, with 0.5° scale divisions.
Available in 0/30° and 30/60°, calibrated at various temperatures.
60°F: GB2535/ 84°F: GC2535/ 15°C: GA2535/
These hydrometers are 250 mm long, with 1.0° scale divisions.
Available in 0/50°, calibrated at various temperatures.
60°F: GB2546/ 84°F: GC2546/ 15°C: GA2546/
These hydrometers are 250 mm long, with 1.0° scale divisions.
Available in 0/70°, calibrated at various temperatures.
60°F: GB2550/ 84°F: GC2550/ 15°C: GA2550/
Discover precision instruments tailored for your industry needs.