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Hydrometers

Hydrometers

Types of Hydrometers

Specific Gravity is the standard scale for what a hydrometer measures, choose plain or combined forms. Specific gravity is the ratio of the density of your sample at 60°F to the density of water at 60°F.

Plain Form hydrometers do not have a built-in thermometer; use a separate thermometer to measure the temperature .

Combined Form hydrometers that have a thermometer built into the body or stem to measure the temperature of the sample.

API scale hydrometers are selected by the American Petroleum Institute (API), the United States Bureau of Mines, and the National Institute of Standards and Technology (NIST) as the standard scale for petroleum products.

Baumé hydrometers are used for liquids heavier than water, such as syrups.

Brix Scale hydrometers are used by the sugar industry. The degrees of the scale are equal to the percentage of sucrose by weight at standard temperatures.

Salt hydrometers are graduated in % saturation or % by weight of salt in solution.

Alcohol (Tralle and Proof Scales) hydrometers measure directly in percentage ethyl alcohol by weight in water from 0 to 100%. The Proof scale indicates the proof of alcohol from 0 to 200 proof. Proof is twice the percentage of alcohol by volume in solution.

Soil hydrometers determine the specific gravity of a suspension, enabling the percentage of particles of a certain equivalent particle diameter to be calculated.

How to Read a Hydrometer

  1. Pour your sample into a smooth, clear cylinder or jar that is dry or well rinsed with a portion of the sample.
  2. Make sure that your sample is thoroughly mixed before testing.
  3. Immerse the hydrometer in the liquid to a point slightly below the place where it naturally floats. Make sure the hydrometer and liquid are at rest and free of air bubbles.
  4. Measure the temperature of the sample. Ideally, the sample temperature should be equal to the temperature standard of the hydrometer, generally 60°F. If temperature differences are unavoidable, correction tables can help to adjust readings— call our Application Specialists for information.
  5. Take your reading at the point where the surface of the liquid crosses the hydrometer.

We are proud to offer nonhazardous and environmentally friendly, mercury-free alternatives.


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H-B Durac Plain-Form Glass Hydrometer, 1.000 to 1.220 SG/0.002

  • Specific gravity range: 1 Minimum
  • Product Type: Hydrometer
  • Specific gravity range: 1.22 Maximum
EW-08298-84
In stock.
$24.00 USD/EACH

Qty:

H-B Durac Precision Plain-Form Glass Hydrometer, 1.000 to 1.070 SG/0.0005

  • Specific gravity range: 1 Minimum
  • Product Type: Hydrometer
  • Specific gravity range: 1.07 Maximum
EW-08298-65
In stock.
$27.00 USD/EACH

Qty:

H-B Durac Plain-Form Polycarbonate Hydrometer, 1.000-1.180 SG/0.002 Div

  • Specific gravity range: 1.000 Minimum
  • Product Type: Hydrometer
  • Specific gravity range: 1.180 Maximum
EW-08298-38
In stock.
$85.00 USD/EACH

Qty:

H-B Durac Ethyl Alcohol Glass Hydrometer, 75-95% Proof/0.2%

  • Product Type: Hydrometer
  • Manufacturer number: B61807-4000
  • Length: 300 mm
EW-08296-09
In stock.
$32.25 USD/EACH

Qty:

H-B Durac Plain-Form Glass Hydrometer, 1.000 to 1.600 SG/0.005

  • Specific gravity range: 1 Minimum
  • Product Type: Hydrometer
  • Specific gravity range: 1.6 Maximum
EW-08298-80
In stock.
$23.25 USD/EACH

Qty:

H-B Durac Plain-Form Polycarbonate Hydrometer, 1.200-1.420 SG/0.002 Div

  • Specific gravity range: 1.200 Minimum
  • Product Type: Hydrometer
  • Specific gravity range: 1.420 Maximum
EW-08298-41
In stock.
$84.75 USD/EACH

Qty:

H-B Durac Plain-Form Glass Hydrometer, 1.000 to 1.225 SG/0.005

  • Specific gravity range: 1 Minimum
  • Product Type: Hydrometer
  • Specific gravity range: 1.250 Maximum
EW-08298-50
In stock.
$21.00 USD/EACH

Qty:

H-B Instrument Glass Hydrometer, 0 to 100 Percent Saturation of Salt, Plain Form

  • Product Type: Hydrometer
  • Manufacturer number: B61809-0000
  • Form: Plain
EW-08297-38
In stock.
$24.00 USD/EACH

Qty:

H-B Durac Combined Alcohol Glass Hydrometer, 0-100% Tralle/0-200% Proof

  • Product Type: Hydrometer
  • Manufacturer number: B61807-8000
  • Division: 1% Tralle
    2% Proof
EW-08285-58
In stock.
$74.00 USD/EACH

Qty:

Hydrometer Case for 380 mm Length Hygrometer

  • Product Type: Hydrometer Case
  • Manufacturer number: B61900-0200
  • Length: Fits one hydrometer up to 15" L (381 mm) mm
EW-08285-97
In stock.
$55.75 USD/EACH

Qty:

H-B Durac Ethyl Alcohol Glass Hydrometer, 90-110% Proof/0.2%

  • Product Type: Hydrometer
  • Manufacturer number: B61807-4100
  • Length: 300 mm
EW-08296-11
In stock.
$32.25 USD/EACH

Qty:

H-B Durac Precision Plain-Form Glass Hydrometer, 1.060 to 1.130 SG/0.0005

  • Specific gravity range: 1.06 Minimum
  • Product Type: Hydrometer
  • Specific gravity range: 1.13 Maximum
EW-08298-67
In stock.
$26.25 USD/EACH

Qty:

H-B Durac Plain-Form Glass Hydrometer, 1.200 to 1.420 SG/0.002

  • Specific gravity range: 1.2 Minimum
  • Product Type: Hydrometer
  • Specific gravity range: 1.42 Maximum
EW-08298-86
In stock.
$23.25 USD/EACH

Qty:

H-B Durac Ethyl Alcohol Glass Hydrometer, 105-125% Proof/0.2%

  • Product Type: Hydrometer
  • Manufacturer number: B61807-4600
  • Length: 300 mm
EW-08296-13
In stock.
$32.25 USD/EACH

Qty:

H-B Durac Plain-Form Glass Hydrometer, 0.800-0.910 SG/0.001

  • Specific gravity range: 0.8 Minimum
  • Product Type: Hydrometer
  • Specific gravity range: 0.91 Maximum
EW-08298-29
In stock.
$21.00 USD/EACH

Qty:

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