Weight per Gallon Cups - byk.com

1 Additives & InstrumentsA member ofMeasure what you per Gallon CupsManualEnglishWeight per Gallon CupsManualPV-9654 PV-9655PV-9664 PV-9658PV-9659 BYK-Gardner GmbHLausitzer Str. 8D-82538 GeretsriedGermanyTel. 0-800-gardner (0-800-4273637) +49-8171-3493-0 Fax +49-8171-3493-140 BYK - Gardner USA9104 Guilford RoadColumbia, MD 21046 USAP hone 800-343-7721 301-483-6500 Fax 800-394-8215 BYK-Gardner Weight Per Gallon Cup is a simplified form of pycnometer specially designed to measure the density of a fluid at a standard temperature of 77 F (25 C). The net Weight of the air-free sample is determined to the nearest gram, and converted by simple factors to either density (pounds per Gallon ) or specific gravity (density relative to water). These corrosion resistant stainless steel cups are available in 3 sizes: Regular, Midget and Mix the material thoroughly before pouring a representative sample into the cup.

2 Fill the cup until the liquid level is just below the rim at 25 C or other agreed upon temperature. Avoid trapping air bubbles in the sample. 2. Place the perforated lid on top of the cup and seal it with a careful twisting motion. An excess of the liquid should ooze (not squirt) put of the small hole on top of the snugly fitting lid. Wipe off this excess material, using a soft cloth or tissue Weigh the properly filled cup, (usually to the nea-rest gram), on an appropriate laboratory ba-lance. A tare Weight is available with the 3 sizes of cups . It can be used as a counterpoise to determine rapidly the net Weight of the sample when an even-arm or trip balance is used. The Weight of the tare equals the exact Weight of the empty cup and its lid. 4. Using the net Weight , compute the pounds-per- Gallon density or the specific gravity of the sample by the following : The Regular Cup contains grams of water at 25 C.

3 The net Weight in grams of the fluid sample is divided by 10 to obtain the Weight in pounds per U. S. Standard Gallon . This Weight per Gallon is multiplied by to obtain a specific gravity or the net Weight of the cup can be divided by for a direct conversion to specific Midget Cup has a capacity of grams of water at 25 C. The net Weight of the fluid sample in grams equals the sample s density in pounds per U. S. Gallon . To obtain specific gravity, multiply pounds per Gallon by or divide the net Weight of the cup by Operation3 The larger Imperial Cup contains grams of water at 25 C; the net Weight in grams of the fluid sample is divided by 10 to obtain the Weight in pounds per British Imperial Gallon . This Weight in pounds is multiplied by to obtain the specific gravity or the net Weight of the cup is divided by 100 to obtain this figure of Density and Specific Gravity Density Specific Gravity ( ) (relative to water)Regular cups g of sample x x or or g of sample : 10 g of sample x cups g of sample x or g pf sample x Imperial cups g of sample x x or or g of sample : 10 g of sample x of Temperature Control: All Weight per Gallon cups are calibrated with di-stilled water at the factory before shipment so that the correct net Weight of water is retained in the cup at the prescribed temperature of 77 F (25 C).

4 This same standard temperature is recommended when using these calibrated cups . Volume expan-sion or contraction of both the cup and sample will cause errors if the temperature is not kept under control. In determining an absolute density value both the cup and its contents must be brought to the standard calibration temperature of 77 F or Operation425 C. However, in determining the relative den-sity values between different samples, all that is necessary is that the cups and its contents be brought to the same temperature before weighing. NOTE: For additional information regarding density measurements, refer to ASTM D 1475, Density of Paint, Varnish, Lacquer and Relative Products .Operation5253 017 659 EDFIS 0408 Euro