The most accurate syringe in common use has an accuracy of ±4% when its nominal volume is 5 mL or greater when delivering at 50% or more of its nominal volume. Glass syringe – This type of syringe is used with a syringe pump. Unlike plastic syringe that is disposable, glass syringes are reusable and more accurate when compared to other types of the syringe. The plunger can be made from ground glass, glass with a Teflon syringe tip, metal with a Teflon tip, and metal-only. Glass syringe is more expensive than the plastic syringe.

There are also options other than syringes available depending on your dose, comfort, and cost factors. Insulin syringes are the least expensive of all the options for insulin delivery. The needle length ranges between 1 and 1 ¼ inch and gauges 22 to 25 injected to the anterolateral thigh muscle. Below 50% of its nominal volume, the accuracy of the syringe declines with the volume measured until, at 10% of its nominal volume, it delivers ±16% accuracy. So when measuring a volume of 0.1 mL in a 1 mL syringe, the best you can actually know is that you are delivering somewhere between 0.084 and 0.116 mL. At 20% of its nominal volume, such a syringe delivers ±9.5% of its apparent measured volume, so, if we were to set ±10% as our acceptable standard of accuracy, then the lowest volume we can accurately measure with any syringe available to us is 0.2 mL General-purpose syringes are used in many laboratories and other workplaces for drawing up and expelling liquids or suspensions. They are designed to fit appropriate needles, tubing, syringe filters, or similar devices, and are constructed of plastic, glass, or a combination of both. They may also have metal components. Applying this same analysis to liquid medications (with a variance of ±10%), we are looking at roughly a ±14% variance (removes reconstitution variance).

Whether it’s a new experience or you’ve been using insulin injections for a while, it’s good to be familiar with the safest and most effective way to give yourself insulin shots.

The reality from ISO7886-1, however, is that delivering 9.6 mL from a 10 mL syringe has a ±4% precision, which means that we only know for certain that we delivered somewhere between 9.22 and 9.98 mL of diluent. Presuming the expansion from 9.6 to 10 mL is roughly linear within this narrow range, that means that our resulting volume is somewhere between 9.6 and 10.4 mL, so our concentration is somewhere between 86.5 mg/mL (900 mg/10.4 mL) and 119.8 mg/mL (1,150 mg/9.6 mL).At least some vials of Cefazolin 1 gram indicate that reconstitution with 9.6 mL of a suitable diluent produces a solution 10 mL of which contains 1 gram (100 mg/mL). Presuming a completely accurate delivery of that diluent (or, as our European colleagues call it, the solvent), that means that we know that we have somewhere between 90 mg/mL and 115 mg/mL concentration.

This is a 10 mL syringe. Each line measures in 0.5 increments until it reaches a total capacity of 10 mL. Generally, these devices are made of plastic, glass, or a combination of both, and function by fitting certain connectors, tubing, and filters. They may also have metal components. Prepare the vial: A person can now take the protective covering off the insulin vial and sterilize the top with an alcohol swab.

How to Measure Liquids Using a Graduated Cylinder

The recommended needle gauge ranges between 22 and 25 with a length of 5/8 inches to be introduced to the anterolateral thigh muscle. The visibility of line markings on the barrel. It would be best if you are going to choose a small syringe size as the lines on the barrel of small syringes are easier to read than big syringes. Pharmacy Direct is Australia’s first online pharmacy, providing medication and general health products across the country for over 20 years. Our range includes more than 17,000 products from the top world-renowned brands. From vitamins and baby health care to cosmetics and household items - we offer everything you need to look and feel at your best. This means that (for example), if we fill a 50 mL syringe to its 50 mL mark and we all agree the syringe is full (contains no significant air), the best we can know is that the syringe contains somewhere between 48 and 52 mL.