Are the finger cots really anti-static?

Trufit ESD has measurable resistance stated on the CoA for each batch; ordinary types only reduce powder/lint and are not measurable — specify clearly when ordering.

Usually thumb, index and middle; change when torn or at the end of the shift.

Do they smell of rubber?

Chlorinated, so almost odourless and powder-free.

Finger diameter 16–18 mm; S for women with small hands, L for the thumb.

ESD Finger Cots in Vietnam – Quote in 30 Min

Stocked item: delivered in 1–2 working days in Ho Chi Minh City, Binh Duong and Dong Nai; free delivery for orders from VND 20,000,000; defective items exchanged within 7 days. Shipping & return policy

Code: FC-TF · Specification: ESD (anti-static) finger cots (Trufit, banded and unbanded). Delivery: stock items delivered within 24–48 hours (Ho Chi Minh City, Binh Duong, Dong Nai); lead time for bulk orders is confirmed with the quotation.

Also known as: Trufit M18, “Trufit finger cots”, “anti-static finger cots”, “yellow-band finger cots” — the difference: available in 2 types (smooth Trufit and textured yellow-band), in standard bags for per-shift issuing.

Powder-free rubber finger cots, chlorinated to reduce ions, worn on 2–3 fingers when picking components, PCBs and lenses — an alternative to gloves when real fingertip feel is needed. Smooth Trufit for cleanrooms; textured yellow-band for steps that need grip (pulling tape, handling reels).

Item	Value
Material	Powder-free natural latex, chlorinated (latex-free nitrile optional)
ESD	Trufit ESD: resistance per batch CoA; yellow-band: basic anti-static
Size	S / M / L (Trufit); M (yellow-band)
Thickness	0.08–0.10 mm
Surface	Smooth (Trufit) / textured (yellow-band)
Colour	Off-white / yellow
Cleanliness class	Class 100 (Trufit)
Packing	Trufit: 1,440 pcs/bag; yellow-band: 500 pcs/bag
MOQ	1 bag

Choose by process step
– SMT, cleanroom, handling PCBs → smooth Trufit (this code).
– Grip needed, handling reels/tape → textured yellow-band (FC-Y).
– Latex allergy → nitrile (order in advance).
– Whole-hand contact → PU fingertip-coated gloves (GP-F).

Documents per batch: CoA (ions, particles), RoHS; samples of 50 pcs.
Recurring orders: price held for 6 months, minimum stock of 5 bags.

Material and manufacturing process

The finger cots are dip-moulded from natural rubber latex with a rolled edge so they roll on easily and grip the base of the finger. Two process steps determine quality for electronics and cleanroom environments:

Powder-free: donning powder (corn starch) is a source of particles and carries latex proteins.
Chlorination: reduces surface tack so the cots go on easily without powder; the washes in this process also significantly reduce soluble proteins — the cause of latex allergy. Side effect: a smoother surface with less grip, which is why PRIMEAG also offers a textured type for steps that need grip.

As an international quality reference: the QRP Qualatex 8C dissipative latex finger cot line states a thickness of 0.09 mm, an average surface resistance of 10⁷ Ω/sq, powder-free, chlorinated, for Class 100 (ISO 5) cleanrooms, tested to IEST-RP-CC005.

Why use dissipative finger cots rather than ordinary ones?

Ordinary latex is an insulating material. Desco explains two risks of wearing ordinary finger cots in an EPA:

The wrist strap stops working at the fingertip: the operator is grounded, but the insulating latex layer prevents charge between the component and the hand from equalising through the ground path.
Charged device model discharge (CDM): a component can become charged on its own (sliding in an IC tube, or induced by a nearby insulator). When a grounded finger touches it, the component discharges very quickly. A dissipative finger cot increases contact resistance so the charge drains more slowly — which is why Desco recommends mandatory dissipative gloves/finger cots where CDM must be controlled.

Bag of 1,440 powder-free Trufit ESD finger cots (10 gross) – PRIMEAG — Powder-free Trufit ESD finger cots – bag of 1,440 pcs (10 gross)

Standards and testing

ANSI/ESD STM15.1-2019 is the test method for gloves and finger cots: it measures the intrinsic resistance of the material and the system resistance when worn (person – finger cot – ground).
Acceptance limits are set by each factory. Many organisations use a limit of < 1×10¹¹ Ω (per ANSI/ESD S541) for ESD gloves; companies controlling CDM often require 1×10⁶–1×10⁹ Ω. Some customers also test charge decay from ±1,000 V to ±10 V in under 2 seconds.
Test samples from each batch at low humidity — material resistance rises when the air is dry.
Remove finger cots when testing wrist straps at the start of a shift: a finger cot of about 10⁸ Ω will make the tester (upper limit about 10⁷ Ω) report a fail even though the wrist strap is fine.

Latex allergy — what EHS needs to know

According to NIOSH (USA), reactions to latex products take three forms:

Irritant dermatitis: the most common; dry, itchy skin from friction and powder — not a true allergy.
Allergic contact dermatitis: caused by chemical additives used in rubber manufacturing.
Immediate allergy: caused by latex proteins; from rash and itching to runny nose and asthma-like symptoms.

NIOSH notes that latex proteins attach to powder and become airborne when gloves are changed; a “hypoallergenic” label does not reduce the risk of latex allergy. Workers with a history of allergy should switch to nitrile finger cots. Do not use oil-based hand creams with latex — oil degrades the rubber.

Bag of white powder-free ESD finger cots, 10 gross/bag – PRIMEAG — White powder-free ESD finger cots – 10 gross/bag

Donning, changing and disposal

Wash and dry hands before donning; place the finger cot on the fingertip and roll the edge down the full length, without stretching it thin.
Choose the right size: a loose cot slips off easily; one that is too tight tears easily and tires the finger.
Finger cots are single-use; change them when torn, contaminated with flux or oil, or when leaving the work area.

Storage and shelf life

Latex oxidises faster in heat: store in a dry, cool place at about 10–22 °C, in the original packaging until use.
Avoid UV — including fluorescent lamps — and ozone sources such as electric motors, fans, air conditioners and spark-generating equipment. Ozone can pass through plastic bags.
Issue first in, first out; discard finger cots that are brittle, tacky or have a pungent smell.

FAQ

Are the finger cots really anti-static? — Trufit ESD has measurable resistance stated on the CoA for each batch; ordinary types only reduce powder/lint and are not measurable — specify clearly when ordering.
How many fingers? — Usually thumb, index and middle; change when torn or at the end of the shift.
Do they smell of rubber? — Chlorinated, so almost odourless and powder-free.
Who does size M fit? — Finger diameter 16–18 mm; S for women with small hands, L for the thumb.

Certificates and test reports

RoHS (10 substances) — CPST – Eurones Products Testing (Dongguan), report no. C230522074001-1 (24/05/2023): latex finger cots (white, black, pink, yellow): all 10 RoHS substances not detected (ND). Download PDF

Submitter/manufacturer details on the reports are masked to protect the supply chain; full copies are sent to customers on request. See all: PRIMEAG product certificate and test report file.

Technical references

Price: from 160,000 VND (excl. 8% VAT).

REQUEST A QUOTE: send bags per month and type — PRIMEAG quotes within 30 minutes.

Hotline/Zalo +84 906 108 292 · info@primeag.vn

Written by the PRIMEAG engineering team.

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Updated: 2026-10-26

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ESD Finger Cots