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B Scale Durometers
> PTC® Durometer 'Shore B Scale' Model 306BL
ASTM Type B Classic Durometer
PTC® Durometer 'Shore B Scale' Model 306BL
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Add a 1kg Load Weight or Durometer Stand
Compatible Test Stands
The Model 306BL Type B Durometer is designed to measure ASTM (American Society for Testing and Materials) D2240 Type B hardness. B Scale Test the Hardness of Moderately Hard Rubber, Elastomers, Paper Products and Fibrous Materials.
These durometers can be used either with a
, hand-held or with the
constant load weight.
Specifications Sheet 306BL
Max Hold Pointer Standard
Easy to Read 0 to 100 Point Dial
Accessory Test Stands Available
1kg Constant Load Weight Available (Model 441)
NIST/A2LA to ISO 17025 Certification Available
Includes Precision Aluminum Test Block
Meets or exceeds current ASTM D2240 Specs
Range (Type B) 0-100 points
Accuracy of ±1 Point
Height 4 in. (10.2 cm)
Width 2-1/4 in. (5.7 cm)
Depth 1-3/4 in. (4.4 cm)
Weight 8 oz. (227 g)
Shipping Weight 3lb (1.4kg)
For a complete calibration check of mainspring, and visual and mechanical check of indenter, the instrument should be returned to PTC® (see Guarantee &Calibration Service) or refer to ASTM D2240 Specifications. PTC® recommends the unit be returned at least every 12 months for this check. For a quick field check, follow the guideline below. Under no circumstance should a test block be used as a standard to calibrate a durometer.
1. The pointer should read zero when no force is applied to the indenter of the durometer.
2. Hand hold the durometer and insert the indenter into the hole of the calibrated test block. Apply enough force to make firm contact between the top surface of the test block and the base of the durometer. The dial reading should agree with the value stamped on the check block (±1). Several tests should be made and the results averaged.
3. The indenter must protrude 0.098 to 0.100 inches below the base of the durometer.
4. When the indenter is fully displaced, the durometer should read 100 points. Use care as to not damage the tip of the indenter.
320 Spring Load Cell Stand
471 1 kg Weight Stand
7000A Hydraulic Stand
Constant Load Weight 1kg Model 441
Rubber Test Block Kit for ASTM Type A Durometers Model 400A
Durometer Certification to ISO 17025
PTC® Durometer Stand for A | B | O Durometers Model 471
Durometer Stand Spring Load Cell 320
PTC® Hydraulic Durometer Stand for A | B | O Durometers Model 7000A
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