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How many solutions do I need to load the autosampler vials ? My sample size is very small, about 0.4ml, MS does not suck up, how should I adjust it?
Indicators given in the Autosampler Technical Manual Shimadzu HPLC vials china manufacturer:
The standard needle depth is 3.6mm from the bottom of the sample bottle (the volume is about 300ul), which can be considered as the amount of sample that cannot be extracted at the bottom. The recommended sample volume is 1mL, so for the problem of the landlord, Ordinary autosampler direct injection may not meet your requirements.
There are two solutions:
1. Find the factory engineer to help adjust the position of the syringe. It can be adjusted down appropriately. It has reached the goal of extracting more samples. The advantage of this solution is that there is almost no extra overhead. The disadvantage is that if the adjustment is not Good or the quality of the injection bottle is not good, similar to some brands, the bottom contraction height is inconsistent, which may cause damage to the syringe.
2. Adding an inner cannula to the vial has solved this problem. The advantage is that the scheme has a high insurance factor and is a mature solution. The disadvantage is that the overhead of the consumables is relatively increased. According to the information given by the landlord, if the sample volume is about 400ul, the flat-bottomed intubation can be considered. The price of this product is relatively low and should be within the range that you can bear Shimadzu HPLC vials china manufacturer.
It is reminded that there are two kinds of imported flat-bottomed inner cannula, an outer diameter of about 5.7mm. This inner cannula has a thin wall thickness and is not very stable in a 9mm sample vial, which may damage the syringe. , but the advantage is that the adaptability is better, almost all brands of bottles can be used, another relatively high price of the outer diameter is 6mm, the inner cannula glass is much thicker, after the sample is obviously vertical, right The syringe is well protected, but the problem is that it is not fully compatible with Shimadzu HPLC vials china manufacturer.
This is the end of the introduction of Autosampler sample solution volume. I hope it can help you.
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