Get 10% off with WELCOME10
Sign up for our emails and get 10% off your order with code WELCOME10 (one use per customer). We send marketing emails only to people who sign up, and every email includes a one-click unsubscribe link.
Free U.S. shipping on every order · Free 30-day returns · Real help by email





Orders are prepared in 1–3 business days and arrive 3–7 business days after they ship. Alaska, Hawaii, Puerto Rico, U.S. territories and APO/FPO/DPO addresses can take longer. You get a tracking number by email as soon as your order ships.
Free returns within 30 days of delivery: we email you a prepaid return label, no reason needed. Items must be unopened, with the manufacturer or tamper-evident seal intact, in their original packaging. Opened, used or partially consumed vitamins, minerals and supplements, items with broken or missing seals, and gift cards can't be returned. Damaged, defective, incorrect or expired items are always covered. Refunds go back to your original payment method within 10 business days of approval.
If you have a question about an item, its label or your order, email sales@naturalvitaminsonline.com with the product name or order number. We answer every message by email and reply within 1 business day (Monday to Friday, Eastern Time).
Talk to your doctor or pharmacist before starting a supplement, especially if you're pregnant or nursing, take medication, or have a medical condition.
†These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.
Talk to your doctor or pharmacist before starting a supplement, especially if you're pregnant or nursing, take medication, or have a medical condition.
LabSyringe Pen Tips are 31G x 6mm (1/4") twist-on tips for compatible pen-style devices and precise liquid measuring, filling, and dispensing.
These tips are made for tasks that call for a pen-style format and controlled liquid handling. Their stated applications range from industrial processes and classroom experiments to plant cultivation, so they can serve different precise measuring, filling, and dispensing routines. The size and connection style are key details to match with a compatible device.
Each LabSyringe tip measures 31G x 6mm (1/4") and is designed for compatible pen-style devices. Consistent dimensions are intended to support a reliable fit and smooth everyday operation across devices that accept this configuration. Confirm that your device uses this size and a compatible threaded connection before choosing these tips.
The threaded base screws onto a compatible device and screws off for removal. An anti-slip cover is designed to make connection and disassembly easier, while the threaded connection helps reduce leakage or accidental detachment during routine operation.
The LabSyringe pack contains 100 individual pen tips, each separated in its own package. This format helps keep the units organized during storage and transport and makes it straightforward to access them for routine replacement. Thin-wall construction is intended to promote efficient flow while keeping the tip profile compact.
LabSyringe Pen Tips suit users who need a 31G x 6mm tip for a compatible pen-style device and work involving precise liquid handling. They are designed for industrial, educational, and plant-cultivation settings rather than for devices that do not accept the specified size and threaded connection.
Q: What size are LabSyringe Pen Tips, and which devices do they fit?
A: LabSyringe Pen Tips measure 31G x 6mm (1/4") and are designed for compatible pen-style devices that accept this size and a threaded connection.
Q: How many tips come in a LabSyringe pack?
A: A LabSyringe Pen Tips pack contains 100 individually packaged tips.
Free standard shipping on every order to U.S. addresses, with no minimum. Orders are prepared in 1–3 business days and arrive 3–7 business days after they ship. Alaska, Hawaii, Puerto Rico, U.S. territories and APO/FPO/DPO addresses can take longer. You get a tracking number by email as soon as your order ships. See shipping details.
Free returns within 30 days of delivery. Free returns within 30 days of delivery: we email you a prepaid return label, no reason needed. Items must be unopened, with the manufacturer or tamper-evident seal intact, in their original packaging. Opened, used or partially consumed vitamins, minerals and supplements, items with broken or missing seals, and gift cards can't be returned. Damaged, defective, incorrect or expired items are always covered. Refunds go back to your original payment method within 10 business days of approval. See returns & refunds.
Damaged, defective, incorrect or expired item? Email your order number, a photo and the lot/expiration details to sales@naturalvitaminsonline.com and we will arrange a replacement or refund; this is always covered. Please report visible shipping damage within 7 days of delivery.
Sign up for our emails and get 10% off your order with code WELCOME10 (one use per customer). We send marketing emails only to people who sign up, and every email includes a one-click unsubscribe link.
Thanks for subscribing!
This email has been registered!