10 Best 31G Needles: Ultra-Thin, Leak-Proof & Pain-Free Dosing

Are you searching for the best 31G needles to ensure precision and comfort?
Discover ultra-thin, sterile needles with leak-proof compatibility, universal fit, and clear markings for reliable, stress-free dosing.

31G needles are the go-to choice for precision and comfort. Their ultra-thin design makes them perfect for accurate dosing in labs, gardens, or homes.

These needles pair with leak-proof syringes for mess-free use. Smooth plungers and clear markings ensure every drop counts. Individually wrapped packs keep them sterile and ready when you need them.

Needles this sharp cut stress, not skin. Universal fit tips work with most pen devices. Thin-wall tech boosts flow for flawless results. Your next project deserves the best 31G needles—read on to find your match.

List of Top 10 31G Needles

Image Title Best For Price
U-100 1ml Syringe with Needle, 31G 1/4 U-100 1ml Syringe with Needle, 31G 1/4″ 6mm 1cc Syringes, Disposable Individual Package, Pack of 100

This product is perfect for lab workers, science teachers, or home hobbyists needing sterile, precise tools for small experiments or DIY projects. Clear markings, leak-proof design, and individually wrapped packaging ensure safe, accurate, and hassle-free use.

Syringes with Needle, U-100 1ml 31G 5/16 Syringes with Needle, U-100 1ml 31G 5/16″ (8mm) Disposable Syringe, Lab Supplies Individual Wrapped, Pack of 30

These syringes are perfect for scientists, lab workers, and home users needing precise, sterile tools. Individually wrapped, leak-proof, and marked with clear scales, they ensure safe, accurate use in non-medical settings.

U-100 1cc 31 Gauge 5/16 Inch Syringe, Individually Packed 20 PACK U-100 1cc 31 Gauge 5/16 Inch Syringe, Individually Packed 20 PACK

This syringe pack is perfect for pet owners and gardeners. It’s great for giving pets meds or feeding plants nutrients with clear, easy-to-read markings and a smooth plunger. The individually sealed design keeps each syringe clean and ready to use.

U-100 1cc Syringes with 31g 5/16 U-100 1cc Syringes with 31g 5/16″ (8mm) , Individually Wrapped, Pack of 100

This product is perfect for pet owners and gardeners. The U-100 1cc syringes are great for giving medicine to small pets like dogs, cats, and birds. They also help in measuring nutrients for plants. Each syringe is individually wrapped for easy storage and use. The leak-proof design ensures no mess during injections.

U-100 0.5cc/ml Syringes 31G 5/16 inch(8mm) needles Individual Pack of 36 U-100 0.5cc/ml Syringes 31G 5/16 inch(8mm) needles Individual Pack of 36

The U-100 0.5cc/ml Syringes are perfect for industrial, science lab, and experimental use. They are not for medical use, but great for precise, small dosages in controlled settings.

EasyTouch U-100 Insulin Syringe with Needle, 31G 0.5cc 5/16-Inch (8mm), Box of 100 EasyTouch U-100 Insulin Syringe with Needle, 31G 0.5cc 5/16-Inch (8mm), Box of 100

The EasyTouch U-100 Insulin Syringe is perfect for people who need smooth, easy injections. It works with most pen devices and has a special tip for less pain.

Kid2Kit 1mL/CC 31G 5/16in, Scientific Lab Refilling, Industrial Measurement, Individually Wrapped, 36PACKS Kid2Kit 1mL/CC 31G 5/16in, Scientific Lab Refilling, Industrial Measurement, Individually Wrapped, 36PACKS

Perfect for scientists, lab workers, and industrial users needing precise liquid measurement. These syringes offer easy-to-read markings and a leak-proof design for accurate refilling in labs, plants, or factories.

ONE-CARE Pen Tips 31G x 8mm, Box of 100, Gentle, Universal Fit with Pen Devices, Extra-Thin Wall Technology for optimal flow ONE-CARE Pen Tips 31G x 8mm, Box of 100, Gentle, Universal Fit with Pen Devices, Extra-Thin Wall Technology for optimal flow

These pen tips are perfect for people who use pen-style injection devices and want a gentle, reliable option. They fit most pens, offer smooth comfort, and ensure steady flow with extra-thin walls and easy-to-peel covers for quick, clean use.

U-100 1/2ml Syringe with Needle, 31G 5/16 U-100 1/2ml Syringe with Needle, 31G 5/16″ 8mm 1/2cc Syringes, Disposable Individual Package, Pack of 20

This product is perfect for science labs, home users, and industrial settings needing sterile, precise syringes. Its leak-proof design, clear markings, and easy one-hand use make it ideal for experiments, small-scale projects, or personal tasks requiring accuracy and safety.

1ml/cc 31G Syringe 5/16 1ml/cc 31G Syringe 5/16″ (8mm) Needle, Disposable Individual Package Pack of 100

This product is perfect for people who need painless, easy-to-use syringes for personal injections. The individual packaging and sharp 31G needles make them safe, portable, and ideal for home use.

Detailed Reviews

Top 10 31G needles are picked using expert reviews and real-user feedback. Each pick balances comfort, precision, and value for labs, pets, or DIY projects. Clear guides help you choose fast—no guesswork, just perfect matches.

1. U-100 1ml Syringe with Needle, 31G 1/4″ 6mm 1cc Syringes, Disposable Individual Package, Pack of 100

U-100 1ml Syringe with Needle, 31G 1/4

U-100 1ml Syringes with 31G 1/4″ needles. Sterile and eco-friendly. Individually wrapped for safety.
Smooth plunger ensures easy use. Leak-proof design keeps it reliable.
Clear markings help measure doses right. Not for medical use—perfect for labs or home projects.

Pros Cons
  • Sharp and smooth needle for comfort.
  • Sterile and individually packaged.
  • Easy to use with one-hand operation.
  • Accurate markings for precise dosing.
  • Leak-proof design for reliability.
  • Not for medical use – strictly for labs or experiments
  • Needles extremely thin – may bend with tough materials
  • Individual packaging adds bulk – harder to store in bulk

Perfect For:

This product is perfect for lab workers, science teachers, or home hobbyists needing sterile, precise tools for small experiments or DIY projects. Clear markings, leak-proof design, and individually wrapped packaging ensure safe, accurate, and hassle-free use.

Ready to Purchase?

2. Syringes with Needle, U-100 1ml 31G 5/16″ (8mm) Disposable Syringe, Lab Supplies Individual Wrapped, Pack of 30

Syringes with Needle, U-100 1ml 31G 5/16

1ml syringes with 31G needle (8mm) come in a pack of 30. Each syringe is individually wrapped for sterile, safe use.

Leak-proof design ensures durability and secure handling. A smooth plunger allows easy one-handed control, and clear scales help measure doses accurately.

Not for medical use—ideal for labs, experiments, or home tools. Sterile packaging keeps each syringe ready for use. Precise and reliable for everyday tasks.

Pros Cons
  • Individually wrapped ensures sterility and safety.
  • Leak-proof design prevents spills and ensures safety.
  • Clear markings allow precise dose measurement.
  • Disposable for easy use in labs or home.
  • Pack of 30 offers convenience for frequent use.
  • Small capacity limits use for larger doses.
  • Not approved for medical or clinical applications.
  • Thin needle may struggle with viscous fluids.

Perfect For:

These syringes are perfect for scientists, lab workers, and home users needing precise, sterile tools. Individually wrapped, leak-proof, and marked with clear scales, they ensure safe, accurate use in non-medical settings.

Ready to Purchase?

3. U-100 1cc 31 Gauge 5/16 Inch Syringe, Individually Packed 20 PACK

U-100 1cc 31 Gauge 5/16 Inch Syringe, Individually Packed 20 PACK

This 20-pack of U-100 1cc syringes is perfect for daily tasks. Each one comes individually sealed for cleanliness and easy storage.

Made of durable plastic, they have clear markings and smooth plungers. Perfect for pets, plants, or small experiments. Not for medical use.

Great for giving meds to animals or mixing garden nutrients. Keep a few handy for quick, precise measuring needs.

Pros Cons
  • 20-pack offers long-lasting supply for daily needs
  • Individually sealed ensures hygiene and freshness
  • Made of durable plastic for reliable use
  • Clear markings for precise measurements
  • Versatile for pets, plants, and lab tasks
  • Not for medical use
  • Confusing packaging quantity (20/100pcs)
  • Limited capacity for larger tasks

Perfect For:

This syringe pack is perfect for pet owners and gardeners. It’s great for giving pets meds or feeding plants nutrients with clear, easy-to-read markings and a smooth plunger. The individually sealed design keeps each syringe clean and ready to use.

Ready to Purchase?

4. U-100 1cc Syringes with 31g 5/16″ (8mm) , Individually Wrapped, Pack of 100

U-100 1cc Syringes with 31g 5/16

The U-100 1cc Syringes come with 31g 5/16″ (8mm) needles, perfect for precise measurements. Each syringe is individually wrapped to keep it clean and ready to use.

These syringes are leak-proof and made of durable plastic. They’re great for pets or plants, with clear scales for easy reading.

Pros Cons
  • Individually sealed for freshness and easy portability.
  • Durable plastic with clear volume markings.
  • Leak-proof design ensures safe handling.
  • Precise measurements for accurate dosing.
  • Multi-use for pets and plant nutrients.
  • Needle length may be too short for larger pets.
  • Small 1cc capacity requires frequent refills for bigger tasks.

Perfect For:

This product is perfect for pet owners and gardeners. The U-100 1cc syringes are great for giving medicine to small pets like dogs, cats, and birds. They also help in measuring nutrients for plants. Each syringe is individually wrapped for easy storage and use. The leak-proof design ensures no mess during injections.

Ready to Purchase?

5. U-100 0.5cc/ml Syringes 31G 5/16 inch(8mm) needles Individual Pack of 36

U-100 0.5cc/ml Syringes 31G 5/16 inch(8mm) needles Individual Pack of 36

U-100 0.5cc/ml Syringes come in a pack of 36. Each syringe has a 31G 5/16 inch (8mm) needle. They are individually sealed for safety.

These syringes are clearly marked for precise dosing. The smooth plunger allows for easy one-handed use. Not for medical use, they are ideal for industrial or lab settings.

Perfect for small dosage needs, these syringes are reliable and easy to use. Each one comes with a cap for added safety.

Pros Cons
  • Individually sealed for hygiene and convenience.
  • Clear graduations ensure accurate small dosages.
  • Smooth plunger allows easy one-handed use.
  • Ideal for labs and industrial experiments.
  • 36-pack offers great value.
  • Not approved for medical use
  • Thin 31G needle may bend easily
  • Individual packaging can be tricky to open

Perfect For:

The U-100 0.5cc/ml Syringes are perfect for industrial, science lab, and experimental use. They are not for medical use, but great for precise, small dosages in controlled settings.

Ready to Purchase?

6. EasyTouch U-100 Insulin Syringe with Needle, 31G 0.5cc 5/16-Inch (8mm), Box of 100

EasyTouch U-100 Insulin Syringe with Needle, 31G 0.5cc 5/16-Inch (8mm), Box of 100

The EasyTouch U-100 Insulin Syringe is a reliable choice for insulin delivery. It fits most pen devices, making it a versatile option.

This syringe features a tri-bevel cut tip, ensuring a smooth and comfortable injection. The needle is electropolished to remove any burrs, providing a seamless experience.

Film-coated for extra smoothness, easy to use, and designed for convenience.

Pros Cons
  • Universal fit works with most insulin pens
  • Tri-bevel needle tip ensures smoother, less painful injections
  • Electropolished needle reduces skin irritation and discomfort
  • Smooth coating allows easy, consistent insulin delivery
  • Not compatible with all pen devices
  • Needle may feel too thin for some users
  • Film coating may wear off quickly

Perfect For:

The EasyTouch U-100 Insulin Syringe is perfect for people who need smooth, easy injections. It works with most pen devices and has a special tip for less pain.

Ready to Purchase?

7. Kid2Kit 1mL/CC 31G 5/16in, Scientific Lab Refilling, Industrial Measurement, Individually Wrapped, 36PACKS

Kid2Kit 1mL/CC 31G 5/16in, Scientific Lab Refilling, Industrial Measurement, Individually Wrapped, 36PACKS

The Kid2Kit 1mL/CC 31G 5/16in comes in a pack of 36, with each piece individually sealed. It’s designed for precise measurements and easy use. The clear markings make reading simple.

The smooth plunger ensures leak-proof performance and is airtight. It’s perfect for scientific labs and industrial tasks. Use it for filling liquids or plant cultivation.

Not for medical use—this product is for labs and industries only. Always handle with care for best results.

Pros Cons
  • Accurate and easy-to-read markings.
  • Smooth plunger for effortless use.
  • Leak-proof design for no spills.
  • Versatile for labs and industry.
  • Individually wrapped for hygiene.
  • Not for medical use
  • Small 1mL capacity may limit use
  • Thin 31G needle might clog easily

Perfect For:

Perfect for scientists, lab workers, and industrial users needing precise liquid measurement. These syringes offer easy-to-read markings and a leak-proof design for accurate refilling in labs, plants, or factories.

Ready to Purchase?

8. ONE-CARE Pen Tips 31G x 8mm, Box of 100, Gentle, Universal Fit with Pen Devices, Extra-Thin Wall Technology for optimal flow

ONE-CARE Pen Tips 31G x 8mm, Box of 100, Gentle, Universal Fit with Pen Devices, Extra-Thin Wall Technology for optimal flow

Ultra-thin 31G x 8mm tips glide in with barely any pressure. Polished smooth finish feels gentle against skin every time. Universal twist-on fit works with most pen-style devices instantly.

Enhanced thin-wall technology ensures reliable, drip-free flow. Individually sealed with easy-peel tabs for clean, ready-to-use tips. Precision-inspected for consistent quality and secure connection.

100 tips per box—always stocked and ready. Perfect for daily use with your favorite pen device.

Pros Cons
  • Universal fit works with most pen-style devices
  • Ultra-fine 31G x 8mm tips ensure gentle, low-pressure use
  • Thin-wall design enables smooth, consistent medication flow
  • Individually sealed with easy peel-off tabs for hygiene
  • Precision-made for reliable quality and secure pen fit
  • Not for syringes, only works with pen-type devices.
  • No color options, all tips are standard white.
  • Single size, no choice for different needle lengths.

Perfect For:

These pen tips are perfect for people who use pen-style injection devices and want a gentle, reliable option. They fit most pens, offer smooth comfort, and ensure steady flow with extra-thin walls and easy-to-peel covers for quick, clean use.

Ready to Purchase?

9. U-100 1/2ml Syringe with Needle, 31G 5/16″ 8mm 1/2cc Syringes, Disposable Individual Package, Pack of 20

U-100 1/2ml Syringe with Needle, 31G 5/16

U-100 1/2ml syringes have a 31G 8mm needle for precise dosing. Each comes sterile in an individual package, made from eco-friendly materials.

Smooth plunger allows easy one-hand use. Leak-proof design keeps the plunger secure. Clear markings ensure accurate measurements.

Pack of 20 syringes for lab or home use. Not for medical use—ideal for experiments or industrial tasks.

Pros Cons
  • Sterile & individually packaged for safety and convenience.
  • Environmentally friendly material supports eco-conscious use.
  • Smooth plunger allows easy one-hand operation.
  • Clear markings ensure accurate dosage every time.
  • Leak-proof design prevents spills and waste.
  • Not for medical use
  • Thin 31G needle may limit applications
  • Only available in 20-count pack

Perfect For:

This product is perfect for science labs, home users, and industrial settings needing sterile, precise syringes. Its leak-proof design, clear markings, and easy one-hand use make it ideal for experiments, small-scale projects, or personal tasks requiring accuracy and safety.

Ready to Purchase?

10. 1ml/cc 31G Syringe 5/16″ (8mm) Needle, Disposable Individual Package Pack of 100

1ml/cc 31G Syringe 5/16

This product includes 100 disposable 1ml syringes with 31G needles and 8mm length. Each syringe comes in its own individual wrap for safety and ease.

Sharp, pain-free needles reduce injection stress. Bold markings and smooth barrels ensure accurate, secure use. Lightweight, single-pack wraps make travel safe and simple.

These syringes are not for medical pros. They’re built for trust and comfort. If unhappy, reach out—we’ll fix it fast.

Pros Cons
  • Contains 100 pieces for multiple uses
  • Sharp, painless injections reduce user anxiety
  • Individually wrapped for safe, easy carrying
  • Clear markings and smooth operation ensure easy use
  • Trusted quality with satisfaction guarantee
  • Not for professional medical use.
  • May not fit all needle requirements.
  • Limited to single use only.

Perfect For:

This product is perfect for people who need painless, easy-to-use syringes for personal injections. The individual packaging and sharp 31G needles make them safe, portable, and ideal for home use.

Ready to Purchase?

Buying Guide

31G needles deliver ultra-fine precision with minimal discomfort. They’re perfect for accurate liquid handling in labs, gardens, and homes. Users love how these tiny tips make tricky tasks simple and stress-free.

Many share how smooth plungers and clear markings let them measure perfectly every time—no drips, no guesswork. Whether dosing plant nutrients or filling cartridges, people feel in control. The sharp yet gentle tip surprises first-timers; “I barely felt it” is a common reply.

These needles shine in repeat use with pen devices, thanks to universal fittings and thin-wall flow tech. Individually wrapped packs keep them sterile and ready—just peel and go. Reliable and precise, they cut frustration and boost confidence on every project.

Factors to Consider:

  • Needle Length: Choose 5/16" (8mm) for shallow, controlled access or 1/4" (6mm) for ultra-fine surface work. Longer isn’t always better—match length to your task depth.
  • Tip Compatibility: Look for universal twist-on fit if using with pen-style injectors or cartridges. A secure lock prevents leaks and misfires.
  • Flow Efficiency: Thin-wall technology increases liquid flow without extra pressure. Results stay consistent, drop by drop.
  • Sterile Packaging: Individually wrapped units ensure cleanliness. Open only what you need—ideal for shared or sensitive spaces.
  • Plunger Feel: A smooth glide means one-handed control and no sticking. Clear barrel markings let you read doses fast.
  • Intended Use: Confirm the product states "not for medical use" if you need lab, pet, or plant tools. Avoids regulatory issues.
  • Volume Capacity: Pick 0.5cc, 1cc, or 1ml based on dose size. Smaller volumes offer finer control for tiny amounts.
  • Quantity & Value: Packs of 20, 36, or 100 suit occasional or heavy use. Bulk saves cost; singles save space.
  • Durability & Clarity: Durable plastic resists cracks. Bold, easy-to-read scales prevent dosing errors every time.
  • Ease of Opening: Easy-peel tabs protect sterility without struggle. No fumbling, no contamination risk.
  • User Comfort: Polished, film-coated tips reduce drag and discomfort. Great for frequent or sensitive tasks.
  • Leak-Proof Seal: A tight barrel-to-plunger fit stops drips. Confidence comes from clean, waste-free work.