TRUEplus Insulin Syringes — 31G x 5/16" | 0.3 cc | Pack of 100
Single-use sterile syringes designed for accurate small-volume liquid handling in laboratory workflows. Ultra-thin 31-gauge needle with a 5/16-inch length and a 0.3 cc barrel graduated in single-unit increments.
Specifications
Gauge: 31G. Needle length: 5/16" (8 mm). Barrel volume: 0.3 cc (30 units). Sterile, single-use. Latex-free. Pack: 100 syringes.
Storage
Store at room temperature in a dry environment. Do not use if individual packaging is compromised.
TRUEplus Insulin Syringes 31G 0.3cc (Pack of 100)
Research Kit – 20% off 10+ vials (full box)
Refund & Replacement Policy
Because our products are temperature-sensitive research materials, opened or shipped peptides cannot be returned. However, we stand behind every shipment in the following cases:
Damaged in transit. If your shipment arrives with a cracked vial, broken seal, or visibly compromised packaging, contact us within 48 hours of delivery with photos of the damage, the packaging, and the shipping label. We will ship a free replacement.
Lost in transit. If tracking confirms your shipment was lost, we will reship at no charge once the carrier closes the investigation.
Wrong item shipped. If we sent the wrong product, we cover the cost of the correct item plus return shipping on the original.
Quality concerns. If you have a Certificate of Analysis question or a verifiable purity concern, contact us within 14 days of delivery and we will review the lot and replace if appropriate.
Unopened travel cases and accessories may be returned within 14 days of delivery for store credit.
To start any claim, email us with your order number and supporting photos. We aim to respond within one business day.