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Specific Gravity Hydrometers
The specific gravity 60/60°F scale compares the relative density of a given liquid with that of water, at 60°F (15.6°C). The instruments listed are similar to hydrometers included in ISO 650 and in the (now superseded) 1960 issue of BS 718.
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Rangefinder Hydrometers
These instruments are suitable for less accurate readings and are frequently used to help select the appropriate hydrometer for subsequent accurate determinations.
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Twaddle Hydrometers
The Twaddle scale is a simplified scale based on specific gravity where 0° Twaddle equates to SG60/60°F of 1.00 (that of water) and each degree Twaddle equals 0.005°SG. These hydrometers are available in 2 lengths each with single degree subdivisions and are adjusted for use at 15.6°C (60°F) for medium surface tension liquids.
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Baumé Hydrometers
The Baumé hydrometers listed are for liquids heavier than water. Zero degrees Baumé equates to an SG 60/60°F of 1.00. This scale uses the accepted relationship where one degree Baumé = 145 - [ 145 / ( SG 60/60°F ) ]
The instruments are all 250mm long and are adjusted at 15.6°C (60°F) and suitable for medium surface tension liquids.
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Milk Hydrometers
For measuring the density of milk. These hydrometers are calibrated in either grams per mililitre, Degrees Specific Gravity or Degrees Quevenne.
1° Quevenne = 0.001 °SG
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Latexometers
These instruments are calibrated in grams of dry rubber per liter of latex.
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Brinometers
These instruments measure the percentage saturated solution of brine in water.
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Urinometers
For measuring the specific gravity of urine.
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Brix Hydrometers
Measuring the percentage of sugar and commonly used in wine production. The Brix scale is the equivalent to Balling and Plato scales.
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Draft Survey Hydrometers
Measuring the apparent density in kg/liters, they are used for ship draft survey calculations. Supplied complete with certificate.
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Gay Lussac Hydrometers
(Alcoholometers)
For measuring alcohol % by volume.
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Wine and Beer Hydrometers
For measuring the specific gravity of wine and beer and designed for home use. This hydrometer will monitor the fermentation process and allows the percentage alcohol to be determined easily with a zoned scale. A Wine and beer Thermometer is also available.
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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).
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ASTM Hydrometers
The American Society for Testing and Materials (ASTM) Specification E 100 describes hydrometers using the API (American Petroleum Institute) scale and others in degrees Specific Gravity.
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Soil Hydrometers
For soil analysis.
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Hydrometer Jars
For use with Hydrometers. Also known as Hydrometer Jars.
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SAMA Type Laboratory Thermometers
These thermometers generally conform to the American National Standards Institute specification ANSI Z 236.1 1983 (sponsored by the Scientific Apparatus Makers Association -SAMA). Mercury filled thermometers are available in white back or easier to read yellow back glass. The thermometers are fitted with a non roll cap and suspension ring.
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IP Thermometers
The thermometers listed below are made in accordance with specifications drawn up by the Institute of Petroleum (IP) for use with specific test methods of petroleum and its products. Many of the tests and instrument specifications are jointly agreed with ASTM and they are marked accordingly. The list of these thermometers is now part of a British Standard. While these thermometers were designed for specific tests, many of them have other uses as quality precision thermometers. They are supplied in yellow back glass wherever possible.
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ASTM Thermometers
The thermometers listed below are in accordance with specifications of the American Society for Testings and Materials (ASTM). Many of the instruments are identical to the IP (BS 2000) thermometers listed earlier and are marked accordingly. While these thermometers were designed for use in specific tests many of them are used in other applications when precision thermometers are required. They are supplied in yellow back glass whenever possible.
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BS 1704 Thermometers
BS 1704 : 1985 is identical to ISO 1770 - 1981 (revised in 1983). The specification includes standard thermometers (designation A to H) and thermometers of higher accuracy (designation J to W). Thermometers with ranges below -35°C are red spirit filled. All other ranges are mercury filled and are made of yellow back glass, wherever possible. The designation reference for partial (75mm) immersion types is suffixed /75.
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BS 593 Thermometers
The thermometers covered by this Standard as listed below provide a higher accuracy than the BS 1704 : 1985 (150 1770-1981). We have only included Celsius thermometers to the BS 593 specification. The thermometers are supplied as standard in yellow back glass wherever possible. Instruments whose range does not include 0°C are specified to have an auxiliary ice point scale.
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Dial Soil
50mm dial soil thermometer with black temperature scale showing recommended zones and spike probe.
Range: 0 to +350°C
Dimensions: 50mm diameter
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Propagation
150mm green propagation thermometer with white temperature scale.
Range: 0 to +50°C&F
Dimensions: 155 x 32 x 10mm
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Glass Stem
These types of instruments are frequently required in the agricultural, horticultural and construction industries, to check temperatures of soil, compost, silage, concrete and road surfacing products. These are available in three lengths. Longer stems have more robust cases and all have a red knob at the top to assist with location.
Dimensions: red knob - 26mm diameter x stem length as box below
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Moisture Meter & PH Meter
Moisture and PH reading meters with strong plastic cases and 200mm metal probes.
Dimensions: 290 x 55 x 34mm
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Long Two Piece Wall
These types of instruments are frequently required in the agricultural, horticultural and Blue printed scale on white background with burgundy frame.
Range: -10 to +50°C&F*
Dimensions: 205 x 40 x 8mm
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240mm Plastic Wall
240mm plastic wall thermometer with blue temperature scale.
Range: -10 to +50°C&F*
Dimensions: 240 x 65 x 8mm
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Long Wood Wall
Wooden wall thermometer with black temperature scale.
Range: -20 to +50°C&F
Dimensions: 205 x 45 x 10mm
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Wood & Brass Wall
Choice of light wood or dark wood wall thermometer with brass temperature scale plate.
Range: -10 to +50°C&F*
Dimensions: 180 x 38 x 9mm
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Coloured Scale Wall
White wall thermometer with red and blue temperature scale.
Range: -10 to +50°C&F*
Dimensions: 150 x 35 x 7mm
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Premium Dial Meat Roasting
50mm dial meat roasting thermometer with black temperature scale and 105mm probe.
Range: +60 to +90°C
Dimensions: 105 x 50mm diameter
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Classic Dial Meat Roasting
50mm dial meat roasting thermometer with black animal symbols and red zones indicating correct temperature. 95mm probe.
Range: 0 to +120°C
Dimensions: 110 x 50mm diameter
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Dial Frying
50mm dial frying thermometer with black temperature scale, pan clip and 135mm probe.
Range: +50 to +200°C&F
Dimensions: 153 x 50mm diameter
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Classic Stainless Steel Dial Oven
50mm stainless steel dial oven thermometer with black temperature scale. Suitable for hanging or sitting on oven shelf.
Range: 0 to +230°C&F
Dimensions: 75 x 60 x 30mm
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Premium Chrome Dial Oven
50mm chrome plated dial oven thermometer with black temperature scale. Suitable for hanging or sitting on oven shelf.
Range: +50 to +300°C&F
Dimensions: 80 x 60 x 35mm
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Stainless Steel Cooking
320mm stainless steel cooking thermometer with black temperature scale with recommended cooking temperatures.
Range: +20 to +200°C
Dimensions: 320 x 50 x 12mm
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Microwave
150mm white microwave thermometer with red temperature scale.
Range: +50 to +95°C*
Dimensions: 155 x 32 x 10mm
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Horizontal Oven
140mm horizontal stainless steel oven thermometer with black temperature scale.
Suitable for hanging or sitting on oven shelf.
Range: 0 to +250°C
Dimensions: 75 x 60 x 30mm
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Brass Sugar & Jam
250mm brass sugar and jam thermometer with black temperature scale and recommended cooking temperatures.
Range: +40 to +200°C
Dimensions: 240 x 46 x 16mm
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Yoghurt
150mm yoghurt thermometer with black print and clear plastic case. Zones at 43°C and 49°C Dimensions: 155 x 20mm
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Milk & Coffee Test
These 45mm diameter dial thermometers incorporate green and red zones enabling fast and easy temperature reading of your milk or coffee. The dials are available in a choice of a 125mm or 175mm probe and are supplied with a stainless steel jug mounting probe clip.
Range: -10 to 100°C&F
Dimensions: 45mm diam x 125/175mm probe
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Premium Stainless Steel Dial Fridge or Freezer
50mm stainless steel dial fridge or freezer thermometer with black temperature scale indicating recommended zones.
Range: -40 to +40°C
Dimensions: 72 x 62 x 40mm
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Chrome Plated Fridge or Freezer
50mm stainless steel dial fridge or freezer thermometer with black temperature scale indicating recommended zones.
Range: -40 to +40°C
Dimensions: 80 x 60 x 35mm
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Vertical Fridge or Freezer
White vertical fridge or freezer thermometer with blue temperature scale indicating recommended zones.
Range: -30 to +40°C*
Dimensions: 142 x 18 x 6mm
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Heavy Duty Fridge or Freezer
120mm chrome and clear front horizontal fridge or freezer thermometer with blue dual temperature scale on white moulding indicating recommended zones.
Range: -40 to +30°C&F*
Dimensions: 30 x 120 x 12mm
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Cold Room
For walk-in fridge/freezer and cold storage rooms. Moulded in white plastic with clear black print.
Range: -50 to +50°C&F*
Dimensions : 240 x 65 x 8mm
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Euro Lidded (Maximum-Minimum Thermometer)
Traditional design with sloping roof. Available in white moulded plastic with blue temperature scale and magnet reset or green moulded plastic with green scale and press button reset.
Range: -35 to +50°C&F*
Dimensions: 226 x 68 x 27mm
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Slimline (Maximum-Minimum Thermometer)
The Slimline max min design is available in white plastic with blue printed temperature scale and a magnet reset.
Range: -35 to +50°C&F*
Dimensions: 205 x 55 x 27mm
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Quick Set (Maximum-Minimum Thermometer)
This popular design features a press button for quick reset. Available in white plastic with blue printed temperature scale and reset button or cream plastic with black print and red reset button.
Range: -35 to +50°C&F*
Dimensions: 205 x 55 x 27mm
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Heavy Duty Push Button (Maximum-Minimum Thermometer)
A robust design with bulbs fully protected and reset by press button. Available in white plastic with blue printed temperature scale and reset button or green plastic with black print and red reset button.
Range: -35 to +50°C&F*
Dimensions: 200 x 67 x 23mm
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Solway (Maximum-Minimum Thermometer)
A modern design with red, blue and black coloured scale in moulded grey plastic. Separate magnet reset.
Range: -35 to +50°C&F*
Dimensions: 250 x 60 x 27mm
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