This safety multifly needle is size 21G (outer diameter 0.8 mm) and has a needle length of 19 mm or 3/4 inch. The color coding is green. The attached tubing is 200 mm long. A multi-adapter is included.

The gauge number indicates the cannula size: 20G corresponds to a 0.9 mm, 21G to 0.8 mm, 23G to 0.6 mm, and 25G to 0.5 mm outer diameter. A smaller gauge number indicates a larger diameter. 21G is a common option for routine venipuncture. Thinner cannulas may be considered for small veins, but may affect blood flow and, depending on the test, sample quality. The selection is made by trained professionals.

With model 85.1638.235, the 200 mm long tubing provides more distance between the puncture site and the attached blood collection tube than the 80 mm version 85.1638.205. This can make handling easier in cases of limited range of motion or unfavorable patient positioning. The longer tubing contains more dead space; its suitability for the desired sample collection should be assessed based on the operating instructions.

Yes. The SARSTEDT Safety-Multifly needle 85.1638.235 has a multi-adapter and is intended for venous blood collection using the S-Monovette system. The selection of the appropriate collection tube depends on the planned laboratory test. The manufacturer's instructions must be observed before use.

The Safety-Multifly is a safety needle with an integrated safety mechanism that is activated after blood collection in accordance with the manufacturer's instructions. It is designed to reduce the risk of needlestick injuries but cannot completely eliminate it. The used needle must be disposed of immediately in a suitable puncture-resistant sharps container.

For item 85.1638.235, SARSTEDT provides sterile individual blisters, each containing one cannula, and an inner carton containing 120 pieces. The cannulas are intended for single use and must not be used if the blister is damaged or the expiration date has passed. Please note the offered sales unit when ordering.