Pen Needles — 31G × 4mm (Box of 30)
Pen Needles — 31G × 4mm (Box of 30)
  1. Pen Needles — 31G × 4mm (Box of 30)
  2. Pen Needles — 31G × 4mm (Box of 30)

Pen Needles — 31G × 4mm (Box of 30)

£4.99

Ultra-fine 31G × 4mm pen needles compatible with standard research pens. Silicone-coated, tri-bevel tip, universal pen fit. Sterile, single-use — 30 needles per box. Laboratory research use only.

What's in the box

  • Pre-filled research pen
  • Replacement needles
  • Ice packs (cold-chain transit)
  • Discreet outer packaging
Rated 4.5 / 5 on Trustpilot · 16 reviews
UK research lab Cold-chain shipped Tracked 24h UK 3rd-party tested
Format

Pre-filled, multi-dose research pen. The compound is already in solution, so there is nothing to reconstitute. Combination pens carry pre-measured quantities of each peptide in a single unit.

Delivery & cold chain

Dispatched within 48 hours (Monday to Friday) on a tracked 24-hour service, so up to 3 working days in total. Every order ships cold-chain with ice packs in insulated, discreet packaging. UK only. Delivery is £3.99, free on orders over £180.

Storage & shelf life

Keep refrigerated at 2–8°C, away from direct light. Do not freeze a pre-filled pen. Shelf life is 3 months refrigerated.

Certificate of Analysis

Every batch is HPLC tested and issued a certificate. We do not publish certificates openly online; request yours after ordering by contacting us with your order reference and batch number.

Fast UK dispatch · Tracked shipping

For laboratory research use only. Not for human or animal use.

SKU: ACC-NEEDLE-30 Category:

Ultra-fine 31G × 4mm pen needles designed for smooth, low-resistance dispensing with standard research pen devices. Each needle is silicone-coated with a tri-bevel tip to reduce insertion force, and uses a universal thread that fits all common research pens.

  • 31 gauge × 4mm length
  • Silicone-coated, tri-bevel tip
  • Universal pen fit
  • Sterile unless opened or damaged — single use only
  • 30 pen needles per box

Store dry, below 25 °C. Dispose of used needles in an approved sharps bin. Supplied for laboratory and research use only. Not for human or veterinary use.

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