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Precision Syringe 1ml 29G (pack of 10) pack de 10 Accessories
Max precision. Ultra-fine 29G.
7,90 €
Tax included • Free delivery from 119€
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Key facts
Precision Syringe 1ml 29G (pack of 10): laboratory equipment for handling research peptides.
Protocol and preparation
See the product sheet for usage instructions.
Mechanism of action
Functional anatomy of the U100 1ml 29G syringe: three mechanically interdependent components.
Dosimetric calibration: volume/U100 unit correspondence is strictly linear: 1U = 10 mcL = 0.01ml. Printed major graduations (10, 20, 30, 40...) correspond to 0.1, 0.2, 0.3, 0.4ml. This correspondence allows rapid calculations without calculator:
- Peptide reconstituted at 5 mg/ml → 10U withdrawn = 500 mcg peptide.
- Peptide reconstituted at 3.3 mg/ml (10mg + 3ml BAC) → 10U = 330 mcg.
- Peptide reconstituted at 10 mg/ml → 10U = 1 mg = 1000 mcg.
This double-puncture protocol avoids partial vacuum formation in the peptide vial which, over successive withdrawals, would make aspiration increasingly difficult and favour non-sterile external air entry during needle withdrawal. It's a classical laboratory gesture taught in nursing training, directly transposable to peptide research.
Frequently asked questions
Does a 29G needle hurt less than finer 30G or 31G needles?
Nearly imperceptibly. Comparative studies (Frid 2016, Hirsch 2010) identify no statistically significant pain difference between 29G, 30G and 31G in adults. However, 30G-31G needles present bending/breakage rates 7 to 24 times higher when passing chlorobutyl septums (Hofman 2010). For peptide research where each session involves 2-3 septum passages, 29G is the best compromise — marginally less fine than 30G but operationally more reliable.
What to do with used syringes? Can I throw them in normal trash?
Absolutely not. Regulatorily prohibited and dangerous for collection staff (accidental puncture risk, potential contamination). Obtain a rigid yellow sharps container (biohazard), available free at pharmacy with peptide or insulin prescription, otherwise paid online. Full container = deposit at pharmacy or waste centre with biohazard bin (15000+ points in France). Never recap a used needle before ejection into container.
The complete guideBacteriostatic water: complete guide for research peptide reconstitutionRead the guide 