Short Guide to Glove Puncture Testing

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Introduction:

In Europe and North America there is very close agreement in the in required puncture test requirements. There are some differences but more agreement. The most important factor to take away is that there are at least 3 types of puncture threats that glove specifiers need to consider. Large nail, small nail and hypodermic needle. Sadly good performance for one of these penetrators does not predict performance with the others. Gloves engineered for needle may not have high performance for the large nail and like wise large nail performance does not predict needle results. Users have to select glove and equipment designed for there puncture needs.

ANSI/ISEA Puncture Level for “Large Nail”

The ANSI test is best described as the large nail puncture test. The puncture probe is a 5mm diameter (3/16 Inch) with a dull conical tip.

There are 2 other puncture test that are important

  • NIJ 99-144 “Small Nail” ASTM F 1342 Puncture Resistance Levels

  • ASTM F3 2878-10 Hypodermic Needle Puncture 28 Gauge WMI

Of the 3 important puncture tests the “Large Nail” is the least informative about the material performance against sharp threats. The “small nail” and hypo test offer results relevant to sharp puncture threats

ASTM /ISEA 105 (EN388) Level Puncture (Newtons) Large nail

Level

Newtons

Grams force

lbf

0

< 10

0

1

≥ 10

1020

2.2

2

≥ 20

2039

4.5

3

≥ 60

6118

13.5

4

≥ 100

10197

22.5

5

≥ 150

15296

33.7

EN388 “Large Nail” Puncture Levels

The EN388 test is best described as the large nail puncture test. The puncture probe is a 5mm diameter (3/16 Inch) with a dull conical tip.

There are 2 other puncture test that are important

  • NIJ 99-144 “Small Nail” ASTM F 1342 Puncture Resistance Levels

  • ASTM F3 2878-10 Hypodermic Needle Puncture 28 Gauge WMI

Of the 3 important puncture tests the “Large Nail” is the least informative about the material performance against sharp threats. The “small nail” and hypo test offer results relevant to sharp puncture threats

The EN388 and ANSI 105 are off set by one level. EN388 level 4 is equal to ANSI 105 level 5.   

level

Newtons

grams force

lbf

1

20

2039

4.5

2

60

6118

13.5

3

100

10197

22.5

4

150

15296

33.7

NIJ 99-144 “Small Nail” ASTM F 1342 Puncture Resistance Levels

The NIJ-ASTM puncture test is based on a small 1.5mm diameter sharp penetrator. This is not a hypodermic needle but this test simulates a small sharp nail.

Like all penetration tests the “Small Nail” test uses a compression testing machine and a drum head clamp to hold the sample.

Level

Newtons

Grams force

lbf

Low

>20

2039

4.5

Moderate

>60

6118

13.5

High

>100

10197

22.5

ASTM F3 2878-10 Hypodermic Needle Puncture 28 Gauge WMI

We use the standard test for hypodermic puncture resistance. Base on Warwick’s 20 years of needle protection we have developed a set of levels that define a useful range of needle puncture resistance.

Like all puncture tests the needle puncture test is based on a compression testing machine. The sample is held in a drum head clamp.

 

Level

grams

Newtons

oz force

1 ≥

50

0.5

1.76

2 ≥

100

1.0

3.52

3 ≥

200

2.0

7.05

4 ≥

400

3.9

14.10

5 ≥

600

5.9

21.15

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