Leneta Sag Meters
Article No. 10663
Anti-Sag Meter Medium 4 6 8 10 12
The Leneta Anti-Sag Meter is a drawdown blade with a series of notches of successively higher clearance.
Features
Two Anti-Sag Meters available
ASM-3 high range
ASM-4 medium range
The notch clearance is related to the degree of sagging and provides a numerical value referred to as the Anti-Sag Index.
The higher the Anti-Sag Index the better the sag resistance of the coating.
The Anti-Sag Meter is called for in ASTM Method D 4400 and Federal U.S. Fed, No. 141 Method 4494 test methods and is essential equipment in paint laboratories in the U.S.A. and throughout the world.
Technical Attributes
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- Data
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Item No. ASM-3 ASM-4 Range: High Medium For Coating Type: High Build Coatings Waterborne Architectural
Notch Clearances:μm: 350, 400, 450, 500, 625, 750, 875, 1000, 1125, 1250, and 1500 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, and 600 mils: 14, 16, 18, 20, 25, 30, 35, 40, 45, 50, and 60 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, and 24 Weight: 2 lbs. International Standards: ASTM D 4400 1 Mils are exact, microns are approximate. Wet film thickness is about half of the clearance.
Procedure
- Preparation of Coating, stir thoroughly and adjust to 23°C (73.5°). Pre-shear in accordance with one of the methods furnished and test immediately thereafter.
- Attach the straight-edge onto the drawdown plate in suitable position.
- Place a test chart on the drawdown plate under the clip.
- Place Anti-Sag Meter on the chart, with it's open side toward operator and it's shoulder against the straight edge.
- Position Catch-Paper
- Place a suitable quantity (8-10mL) of pre-sheared paint directly in front of the blade and draw down uniformly at about 6" (150mm) per second.
- Promptly fasten the drawdown chart to a vertical surface, with stripes horizontal and left edge (thinnest stripe) at the top, and allow to dry in that position.
- Rate the Drawdown.
- Note the notch numbers marked on the Anti-Sag Meter and Identify the corresponding stripes accordingly.
- Ignore the leading and trailing edges, and observe only the central 5-1/2" (140 mm) of blade path corresponding to the black area of Form 7B.
- The lowest (thickest) stripe that does not touch the one below itself is referred to as the index stripe, and its notch number is the Anti-Sag Index of the paint.
- For more precise Anti-Sag Index, add to the Index stripe number the product of the post-index clearance step and a fractional degree to which it has failed to merge with the next lower stripe.
Other Variations