ASTM D6978 Explained: What Chemo-Rated Gloves Are and When Your Staff Need Them

Two boxes of black nitrile can both say "chemo rated" on the panel and mean different things, and the gap is not in the glove — it is in which threshold the breakthrough time was measured against. A supplier can run the ASTM D6978 drug list and then report results against the older general method's criteria, which uses a tenfold looser threshold at room temperature. The number looks the same on a sales sheet. It is not the same number, and on hazardous drug handling it is the difference your pharmacy director will be asked about in an audit.

That one check is most of what a buyer needs from this standard. Here is the rest.

What D6978 actually measures

ASTM D6978 is a standard practice for assessing the resistance of medical gloves to permeation by chemotherapy drugs. Three parts of it matter commercially:

Test parameter	ASTM D6978 (chemotherapy drugs)	EN 16523-1 (general chemical permeation)
Temperature	35 ±2 °C — close to glove temperature shortly after donning	23 ±1 °C — room temperature
Duration	Up to four hours	Up to eight hours
Breakthrough threshold	0.01 µg/cm²/min	1 µg/cm²/min
What that means in practice	Warmer and far more sensitive, so it reports a shorter, more conservative time	Cooler and less sensitive, so the same glove looks better

Permeation rises with temperature, so the warmer test is the one that resembles a glove on a hand — which is why a 2025 review judged D6978's conditions closer to real use, and why a mixed comparison is meaningless: a breakthrough time is only comparable to one measured on the same method at the same threshold. Ask for the method, the temperature, the threshold and the drug list on the same page. If any of the four is missing, you have a marketing document.

The test is drug-specific. Testing houses run a set of compulsory chemotherapy drugs plus optional ones on request, sampling across the four hours and analysing the fractions by chromatography. The result is a table — one breakthrough time per drug — not a single rating. "Chemo rated" with no table behind it is an adjective.

Chemo-rated versus a standard nitrile exam glove

Not every nitrile glove is chemo rated, and thickness alone does not make one. A standard examination glove is assessed for barrier integrity and physical properties under exam glove standards; a chemo-rated glove also has documented permeation results for chemotherapy drugs under D6978, and the rating applies only to the drugs and times in that report.

Two things buyers get wrong. First, they treat the rating as a property of the material rather than the model: nitrile as a polymer is not chemo rated; a specific tested glove is. Second, they assume a heavier glove inherits the rating from a lighter one in the range, or the reverse. It does not — the report names a model and a weight.

Our 6.0 g black nitrile is the weight in our range tested to ASTM D6978, and its specification sheet also lists ASTM D6319 for nitrile examination gloves, the EN 455 series, EN 374 and California Proposition 65. Whoever you buy from, ask for the D6978 report for the model you are buying rather than a range-wide statement, and ask which weights in the range it does not cover.

USP <800> and when the rating is actually required

USP General Chapter <800> addresses the handling of hazardous drugs in healthcare settings and expects gloves meeting ASTM D6978 for that work — compounding and administration, plus the receiving, transport, spill and waste tasks your own assessment places in scope. Beyond that, the specifics buyers ask us about — how often gloves are changed during compounding, and where double gloving applies — are set by the current chapter text and your own facility policy, not by a glove supplier. Get them from your pharmacy's SOP and buy to it. Where double gloving is in scope, note that it is the rating of both gloves that matters, not just the outer one, which changes your volume forecast more than most buyers expect.

Where two quotations for the same chemo glove differ

In rough order of money:

1. Which method and threshold the breakthrough table was measured against. First, and almost never on the comparison sheet.
2. Whether the report covers the exact model and weight you are buying, or a sibling product.
3. Gram weight and cuff length. The quote is built on gram weight; acceptance is argued in mil. Ask for both.
4. Per-lot documentation depth versus a type report filed once from an earlier lot.
5. Box and case print, especially if your facility needs its own labelling or a second language.
6. Sizes carried in the split. An XL at a lower piece count per box is a reconciliation problem, not a saving.

Specification and acceptance checklist

1. Destination market, which sets the acceptance figure and the label set before anything technical.
2. Model and gram weight, with the D6978 report for that exact item: method, temperature, threshold and drug list.
3. Cuff length, and the measurement point for thickness — fingertip, palm and cuff are different numbers.
4. The exam glove standard claimed, with the report revision stated.
5. Powder-free status, and the surface treatment used for donning.
6. Sizes and the split, with the piece count per box for each size.
7. Box, case and pallet counts, with case dimensions and gross and net weight.
8. Inspection stage, who pays, and annual volume behind the first order.

Acceptance, AQL and the figure that gets written backwards

Sampling is the uncontroversial half: pull against ISO 2859-1, general inspection level II.

The acceptance figure is not. For the US market the applicable number for examination gloves is AQL 2.5 under 21 CFR 800.20; the EU applies AQL 1.5 under EN 455-1. Name the destination market in every enquiry and check that each quotation states the matching figure. A supplier writing "medical exam gloves are inspected at AQL 1.5" with no market attached has put a European figure on a US order, and it is the fastest way to spot someone reading a standard they have not opened. Who does the checking? We accept the inspection company you nominate, or we use the inspection company we work with on a continuing basis.

While you are in the physical properties, watch the force-at-break figure, because it is material-specific. Under EN 455-2, rubber examination gloves — nitrile and latex — are assessed against a median force at break of ≥6.0 N, surgical gloves ≥9.0 N, and thermoplastic examination gloves such as vinyl ≥3.6 N, taken as the median of thirteen gloves. A quotation that applies 6 N to a vinyl glove has copied a nitrile line, and an amendment to that standard revised the table to resolve misreadings — so ask which revision the report is written against. Where your facility needs a glove not made with natural rubber latex, our nitrile and vinyl lines are the route; we do not carry latex gloves, and latex appears here only as the comparison case.

A note on that wording, since it is on half the sales literature in this category: FDA's final guidance of 2 December 2014 recommends "Not made with natural rubber latex" and advises against "latex free", because absence of natural rubber latex allergens cannot be reliably assured and contamination can occur in processing or packaging. If your own catalogue still says "latex free", that is a cheap fix and a visible one.

Case, cube and the tariff line

Commercial term	What to fix in the purchase order
Pack hierarchy	Glove → box → case → pallet, with the piece count at every level per size, case dimensions and gross and net weight
Count reconciliation	Reconcile by piece, not by case. XL is commonly packed at a lower count per box than M at the same boxes per case — the most common invoice dispute in gloves
Loadability	As planning figures only: 20ft roughly 26–28 m³, 40ft 55–58 m³, 40HQ 65–68 m³. Gloves cube out long before they weigh out
Pallet configuration	Pallet type, cases per tier, tiers per pallet, pallet-in or floor-loaded, and whether heat-treated pallets are required at your port
Incoterm and port of loading	State both. EXW, FOB Shenzhen and DDP are three different prices; compare like with like and check your own duty line before setting a landed figure against a DDP quote
HS line	Medical gloves of vulcanised rubber sit at 4015.12; vinyl and other plastics gloves sit elsewhere, commonly around 3926.20. A mixed case pack of nitrile and vinyl is two lines on one invoice. Confirm both against your own tariff
Price basis	Indicative USD per case against the current NBR index, with a stated validity window rather than an open-ended price. An open-ended price in gloves usually means there is room in the gram weight
Payment and warranty terms	Payment terms, shelf life from date of production, and the claim route for a short or defective lot, all named in the order

Price, minimum order quantity and lead time are confirmed with each quotation, against your specification and destination market. No article can carry those numbers honestly, and a figure offered without your model, size split and market behind it is a placeholder.

Documents to request, and who carries the liability

Per shipment: the D6978 report for the model and weight, with method, temperature, threshold and drug list on it; the exam glove standard report with its revision; lot numbers and shelf life from date of production; and the inspection report where agreed. Ask for those against the lot you are buying, not as a one-time pack.

Three fields belong on your supplier file before the first order, and a hospital's risk team asks for them first: the legal entity named on the box, the EU authorised representative or responsible person where you ship into Europe, and the US agent of record. A buyer who cannot name all three has no route of recourse that does not run through the person who sold them the gloves. Ask every supplier in writing; we confirm ours for your destination market with the quotation rather than printing it on a web page.

Change control and traceability

The third order is where this category goes wrong. Ask for a written change notification policy covering a change of compound, pigment, surface treatment, box print or source site. A change of surface treatment is the one most often treated as internal — it is not, because donning behaviour and the permeation result can both move with it, and your D6978 report was written on the previous version.

Ask for the lot code on the box and the case so a complaint traces to one batch, and for the lot-code key with the first shipment. Our own policy is short. We notify specification changes in writing; that notification is for your records — we do not hold production for a written approval from you. If your quality system needs an approval gate before a changed product ships, raise it at the purchase order stage so it sits in the terms.

When you do not need a chemo-rated glove

If your staff never handle hazardous drugs, a chemo-rated glove across the whole facility is money spent on a report you will never cite. The heavier weight does help grip and tear resistance, but that is worth paying for on its own merits, not as borrowed safety. Put the rated glove where your assessment puts the task and buy the right weight elsewhere. We would rather split your order that way than sell one glove into every department.

What to send us

Send your destination market, the tasks your assessment puts in scope, your size split, monthly volume and any labelling you need on the box. Ask in the same message for the D6978 report for the model, the exam glove standard report with its revision, and case and pallet figures for your cube maths.

Start from the black nitrile chemo gloves 6.0 g page, which is the weight in our range tested to ASTM D6978, or take in the whole MXGUARD® disposable gloves supplier range. For general ward and clinic use the nitrile exam gloves wholesale line is the usual pairing, and facilities awarding gloves alongside incontinence lines should open the adult care products supplier catalogue and the nursing home supplies page in the same session. For how gram weight and mil are reconciled across the range, see our nitrile glove thickness chart.