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Density Hydrometers - BS 718 : 1991

The standard BS 718 : 1991 is generally aligned with ISO 387 and ISO 649. The specification includes five series and three sub-series of Hydrometers, of which the most widely used are listed. They are calibrated using the accepted units of density: grams per milliliter (g/ml).

BS718:1991 Density Hydrometers Series S50
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Range Span 0.050g/ml
Length = 190mm
Divisioned in 0.002 g/ml
adjusted at 20°C

Hydrometer Range
g/ml
Surface
Tension
Product No
0.60 to 0.65 Low 10/300/0
0.65 to 0.70 10/301/0
0.70 to 0.75 10/302/0
0.75 to 0.80 10/303/0
0.80 to 0.85 10/304/0
0.85 to 0.90 10/305/0
0.90 to 0.95 10/306/0
0.95 to 1.00 10/307/0
1.00 to 1.05 Medium 10/308/0
1.05 to 1.10 10/309/0
1.10 to 1.15 10/310/0
1.15 to 1.20 10/311/0
1.20 to 1.25 10/312/0
1.25 to 1.30 10/313/0
1.30 to 1.35 10/314/0
1.35 to 1.40 10/315/0
1.40 to 1.45 10/316/0
1.45 to 1.50 10/317/0
1.50 to 1.55 10/318/0
1.55 to 1.60 10/319/0
1.60 to 1.65 10/320/0
1.65 to 1.70 10/321/0
1.70 to 1.75 10/322/0
1.75 to 1.80 10/323/0
1.80 to 1.85 10/324/0
1.85 to 1.90 10/325/0
1.90 to 1.95 10/326/0
1.95 to 2.00 10/327/0
For trade price & delivery: Please contact us for details.

BS718:1991 Density Hydrometers Series M50
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Range Span 0.050g/ml
Length = 270mm
Divisioned in 0.001 g/ml
adjusted at 20°C

Hydrometer Range
g/ml
Surface
Tension
Product No
0.60 to 0.65 Low 10/330/0
0.65 to 0.70 10/331/0
0.70 to 0.75 10/332/0
0.75 to 0.80 10/333/0
0.80 to 0.85 10/334/0
0.85 to 0.90 10/335/0
0.90 to 0.95 10/336/0
0.95 to 1.00 10/337/0
1.00 to 1.05 Medium 10/338/0
1.05 to 1.10 10/339/0
1.10 to 1.15 10/340/0
1.15 to 1.20 10/341/0
1.20 to 1.25 10/342/0
1.25 to 1.30 10/343/0
1.30 to 1.35 10/344/0
1.35 to 1.40 10/345/0
1.40 to 1.45 10/346/0
1.45 to 1.50 10/347/0
1.50 to 1.55 10/348/0
1.55 to 1.60 10/349/0
1.60 to 1.65 10/350/0
1.65 to 1.70 10/351/0
1.70 to 1.75 10/352/0
1.75 to 1.80 10/353/0
1.80 to 1.85 10/354/0
1.85 to 1.90 10/355/0
1.90 to 1.95 10/356/0
1.95 to 2.00 10/357/0
For trade price & delivery: Please contact us for details.

BS718:1991 Density Hydrometers Series L50
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Range Span 0.050g/ml
Length = 330mm
Divisioned in 0.0005 g/ml
adjusted at 20°C

Hydrometer Range
g/ml
Surface
Tension
Product No
0.60 to 0.65 g/ml Low 10/360/0
0.65 to 0.70 g/ml 10/361/0
0.70 to 0.75 g/ml 10/362/0
0.75 to 0.80 g/ml 10/363/0
0.80 to 0.85 g/ml 10/364/0
0.85 to 0.90 g/ml 10/365/0
0.90 to 0.95 g/ml 10/366/0
0.95 to 1.00 g/ml 10/367/0
1.00 to 1.05 g/ml Medium 10/368/0
1.05 to 1.10 g/ml 10/369/0
1.10 to 1.15 g/ml 10/370/0
1.15 to 1.20 g/ml 10/371/0
1.20 to 1.25 g/ml 10/372/0
1.25 to 1.30 g/ml 10/373/0
1.30 to 1.35 g/ml 10/374/0
1.35 to 1.40 g/ml 10/375/0
1.40 to 1.45 g/ml 10/376/0
1.45 to 1.50 g/ml 10/377/0
1.50 to 1.55 g/ml 10/378/0
1.55 to 1.60 g/ml 10/379/0
1.60 to 1.65 g/ml 10/380/0
1.65 to 1.70 g/ml 10/381/0
1.70 to 1.75 g/ml 10/382/0
1.75 to 1.80 g/ml 10/383/0
1.80 to 1.85 g/ml 10/384/0
1.85 to 1.90 g/ml 10/385/0
1.90 to 1.95 g/ml 10/386/0
1.95 to 2.00 g/ml 10/387/0
For trade price & delivery: Please contact us for details.

BS718:1991 Density Hydrometers Series M100
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Range Span 0.100g/ml

Length = 250mm
Divisioned in 0.002 g/ml
adjusted at 20°C

Hydrometer Range
g/ml
Surface
Tension
Product No
0.60 to 0.70 Low 10/400/0
0.70 to 0.80 10/401/0
0.80 to 0.90 10/402/0
0.90 to 1.00 10/403/0
1.00 to 1.10 Medium 10/404/0
1.10 to 1.20 10/405/0
1.20 to 1.30 10/406/0
1.30 to 1.40 10/407/0
1.40 to 1.50 10/408/0
1.50 to 1.60 10/409/0
1.60 to 1.70 10/410/0
1.75 to 1.80 10/411/0
1.80 to 1.90 10/412/0
1.90 to 2.00 10/413/0
For trade price & delivery: Please contact us for details.

BS718:1991 Density Hydrometers Sub-series M50 SP
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This sub-series has a greater accuracy than the standard M50 Series and is only available over a limited range of density. This sub-series is commonly used in the Petroleum industry and corresponds to IP 160
Range Span 0.050g/ml
Length = 270mm
Divisioned in 0.001 g/ml
adjusted at 15°C
Hydrometer Range
g/ml
Surface
Tension

Product No

0.60 to 0.65 Low 10/450/0
0.65 to 0.70 10/451/0
0.70 to 0.75 10/452/0
0.75 to 0.80 10/453/0
0.80 to 0.85 10/454/0
0.85 to 0.90 10/455/0
0.90 to 0.95 10/456/0
0.95 to 1.00 10/457/0
1.00 to 1.05 10/458/0
1.05 to 1.10 10/459/0
For trade price & delivery: Please contact us for details.

Thermometers for use with Hydrometers
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BS718 : 1991 recommends these thermometers for precision work. They can be supplied with a UKAS Calibration Certificate which should be specified at the time of ordering.
Product
Range
Subdivision
Product No
A40C/Total Thermometer -0.5 + 40.5°C 0.1°C 51/061/0
B60C/Total Thermometer -21 + 61°C 0.2°C 51/066/0
For trade price & delivery: Please contact us for details.

Other designs and specifications are available to special order. Most products can be branded and packed to your specifications. Minimum quantities apply. Tell us what you need using our product enquiry page.

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