How can I determine the accuracy of my Hamilton syringe?
I keep bending the plungers on my syringes. How can I prevent this?
The plunger in my syringe is stuck. What can I do to free it up?
Which Hamilton syringe do I have?
Why won't my new removable needles fit into my removable needle syringe?
How can I determine the accuracy of my Hamilton syringe?
Hamilton has developed a gravimetric method for determining the accuracy of our syringes. Click here for the
procedure.
I keep bending the plungers on my syringes. How can I prevent this?
The plungers, especially for the smaller volumes bend very easily if not aligned properly or if they are depressed at an angle. To combat this very common problem Hamilton has developed several different products:
- For the 700 series, reinforced plungers are available in the 600, 800, 900 series syringes.
- For the 1700 series, reinforced plungers are available in the 1800 series. (Reinforced plungers are more cost effective for users who often bend plungers.)
Also available are syringe guides designed to maintain proper plunger alignment. As well as reproducibility guides, which serve two purposes:
- Help increase the precision of the injections
- Guide the plunger and maintain plunger alignment
The last option to save a syringe with a bent plunger is to buy a Gastight syringe. The plungers can be replaced at a fraction of the cost of a new syringe.
The plunger in my syringe is stuck. What can I do to free it up?
Frozen plungers are caused by improper care of your syringe. Here are a couple of suggestions to save your syringe:
Click here for syringe cleaning and maintenance tips.
- Soak the syringe in alcohol, acetone or warm water. Do not soak them for longer than 5 minutes.
- Sonic cleaners can sometimes help to free up the plunger.
If the plunger does not start to move after this, you will need to replace the syringe.
Proper cleaning will help prevent frozen plungers. Especially when the syringes are being used for life science applications, where sugary or protein based sample are required. We recommend using a like solvent to dissolves the sample. Rinse the syringe thoroughly and then remove the plunger and allow the syringe and plunger to air dry separately.
Which Hamilton syringe do I have?
Hamilton Company manufactures thousands of different syringes and many of those syringes have the same model number. (the model number is listed on the syringe barrel and is a 3 or 4 digit number, 1701, 1001 or 7001) Because we make multiple variations of each model, it is very important to save the original packaging or at least the original part number for when you need to reorder.
Why won't my new removable needles fit into my removable needle syringe?
All removable needles have a white PTFE ferrule and the ferrule must be removed before the replacement needle can be installed. Generally, the ferrule will come out along with the needle but sometimes it remains behind. If the ferrule does not come out, here are a couple of procedures you can try to get the ferrule out:
- Push the plunger all the way through, depending on the size the syringe the ferrule should pop right out.
- Hold the needle at an angle as you pull out the needle, the end of the needle will help to pull the ferrule out.
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Download
Guide to Selecting the Right Hamilton Syringe for Your Application |
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Download
Guide to Maintaining and Using Hamilton Syringes |