What Is ASTM D6319? Nitrile Exam Glove Standard Explained

August 21, 2026

If you order exam gloves for a clinic in Canada, you have likely seen "ASTM D6319" printed on the box. It shows up on nitrile glove packaging from most suppliers, yet few people know what the letters and numbers actually stand for. This guide breaks down the standard, what it tests, and how it should shape your purchasing decisions.

CliniEco 4 mil blue nitrile exam gloves box of 100 meeting ASTM D6319

What Is ASTM D6319?

ASTM D6319 is the standard specification for nitrile examination gloves published by ASTM International. ASTM develops technical standards for materials and products across industries, and its glove standards are widely used by manufacturers, regulators, and buyers in North America. The standard sets minimum performance requirements that a nitrile exam glove must meet before it can be labeled compliant.

The document covers raw material, physical properties, and testing procedures. When a box of nitrile gloves carries the ASTM D6319 designation, it means the manufacturer tested the lot against the thresholds in the standard and it passed. In Canada, Health Canada treats medical gloves as medical devices, and distributors typically pair ASTM standards with the ISO 11193 series in their quality documentation.

What the Standard Actually Tests

ASTM D6319 spells out a handful of measurable requirements. These are the ones that matter most in daily clinical use.

Freedom from Holes

Water leak tests check a sample of gloves from each lot for pinholes, and the acceptance criteria are strict. A glove with a pinhole is a failed glove, plain and simple, because barrier integrity is the whole point of wearing one.

Physical Dimensions

The standard sets minimum length and width for each size from extra small through extra large. Gloves that come up short at the wrist leave skin exposed during procedures, which is exactly why dimension checks matter. A compliant glove must reach a specified minimum length even after the cuff is rolled.

Tensile Strength and Elongation

Before aging, nitrile gloves must show minimum tensile strength and elongation at break, and the standard applies a lower set of minimums after accelerated aging. These numbers tell you whether the glove will tear while you pull it over your hand or during a procedure that involves stretching. Weak gloves fail at the worst moment, usually while you are holding a needle or handling a sharp instrument.

Powder and Protein Limits

The standard also caps residual powder on powdered gloves. Many Canadian clinics have moved to powder-free nitrile for everything, because powdered gloves leave residue on surfaces and in the clinical environment. Nitrile is naturally latex-free, which removes the protein allergy question that follows natural rubber.

ASTM D6319 vs ASTM D3577

People mix up the two numbers all the time. ASTM D3577 is the specification for natural rubber surgical gloves, while ASTM D6319 covers nitrile examination gloves. Surgical glove standards set stricter requirements in some areas because surgical gloves face longer procedures and higher tear risk. The rest of the family works the same way: ASTM D3578 covers latex exam gloves, and ASTM D6977 covers vinyl exam gloves. If a supplier lists only one standard on a nitrile exam glove box, D6319 is the one you want to see.

What This Means When You Buy

Here is where the standard becomes practical. First, look for the ASTM D6319 designation on the box or on the supplier's certificate of analysis. Second, remember that the standard is a floor, not a ceiling. Two compliant gloves can feel very different in thickness and durability.

A 4-mil glove built to the standard, like the CliniEco Medical Nitrile Gloves 4mil Standard Blue 100 Pack, suits general exam work and low-risk procedures. A lighter 3-mil option, such as the CliniEco Medical Nitrile Gloves 4mil Lightweight Blue 100 Pack, fits short tasks where tactile sensitivity matters more than abrasion resistance. For higher-risk work, step up to a thicker glove like the CliniEco Medical Nitrile Gloves 6mil Extra Heavy Black 100 Pack.

CliniEco 3 mil lightweight blue nitrile gloves box

Stocking a mix of thicknesses keeps costs in check. You do not need a heavy glove for a blood draw, and you do not want a light glove for wound packing. Match each thickness to the task, and keep the ASTM D6319 designation as your baseline for every nitrile exam glove that comes into the clinic.

Frequently Asked Questions

What is the difference between ASTM D6319 and ASTM D3577? ASTM D6319 covers nitrile examination gloves, while ASTM D3577 covers natural rubber surgical gloves. The two set different thickness, strength, and testing requirements because the products face different use conditions.

How do I know if a nitrile glove meets ASTM D6319? Check the box labeling or the supplier's certificate of analysis. Compliant lots are tested for holes, dimensions, tensile strength, and elongation. CliniEco lists the applicable standard on each glove product page, including the 4mil Standard Blue 100 Pack (SKU: CEG-N4-B100).

Do Canadian clinics need ASTM D6319 gloves? Health Canada regulates medical gloves as medical devices, and ASTM D6319 is the recognized benchmark for nitrile exam gloves in the Canadian market, used alongside the ISO 11193 series. It is a practical baseline for any clinic buying nitrile.

Which glove thickness should a clinic stock first? Most clinics start with a 4-mil standard glove for general use, add a lightweight 3-mil for high-touch low-risk tasks, and keep a 5-mil or 6-mil option for cleaning and higher-risk procedures.