Review on 🧪 Calibrated Disposable Essential Lab Transfer by Andrew Agarwal

I was trying to find something similar to use in a cartridge converter/fountain pen refill in place of the syringe I currently use. Suitable for Japanese and American proprietary converters/cartridges, but the tip is too big for international standard converters/cartridges. I found burrs in the seams on some of them, so I figured if I scraped them off they might fit, but no, they still wouldn't fit. Overall, I found them easy to use, well-made, and accurately timed, but just not right for my needs. There is a star deduction for the seam extension.