Bostwick Consistometer - Labomat

Bostwick ConsistometerOperating instructionsThe consistency of a sample is measured by its resistance to flow under specific conditions, for aspecified time. The Bostwick Consistometer is one of many instruments designed to make suchmeasurements.Description :The Consistometer is manufactured from stainless steel engraved with a series of precisegraduations at 0.5cm intervals. The sample is initially retained in a reservoir behind a spring loadedgate prior to testing.Procedure :Step 1- The Bostwick Consistometer is designed to sit at a specified angle. The instrument must beadjusted to ensure that it is at this angle. Locate the two twist screws in the rear of the instrument asillustrated in I. Both of these may be adjusted to raise or lower the sides of the instrument. Adjust thetwo screws until the levelling bubble on the front of the instrument is centered as shown in II A and IIB.Bostwick Consistometer: The instrument must be adjusted to ensure that it is operating at thecorrect angle of incline.Belgian Office : Vlamingstraat 4 - 8560 Wevelgem - Tel.: +32 56 43 28 13 - Fax: +32 56 43 28 14 - info@labomat.com - www.labomat.eu

Step 2- Close the product gate by pulling itdown (A) and while holding it in thisdepressed position, pulling the lever arm upas far as it will go (B). The product gate isnow in its cocked position (C).Step 3- Pour the desired sample into thesample reservoir as shown in A and B. Fillthe reservoir up to the top of the productgate (C).Step 4- Release the product by pressing down on the lever arm (A). Allow the product to run alongthe slope for 30 sec (B).Belgian Office : Vlamingstraat 4 - 8560 Wevelgem - Tel.: +32 56 43 28 13 - Fax: +32 56 43 28 14 - info@labomat.com - www.labomat.eu

Step 5- Look at how far the product ran down the slope during 30 sec. The slope has graduationmarks indicating the distance in centimeters. Record this value as the consistency of the product.Step 6- Clean the Bostwick Consistometer with warm soapy water. Dry the instrument completelybefore using it again.Note:It is very important that the Bostwick Consistometer is dry before using it. Water will decrease thefriction coefficient of the instrument and will result in false readings.Belgian Office : Vlamingstraat 4 - 8560 Wevelgem - Tel.: +32 56 43 28 13 - Fax: +32 56 43 28 14 - info@labomat.com - www.labomat.eu