I need some information on weights for marine investigations. Can you inform me - what types of weights do you use aboard research vessels at the sea? Are there any weights with resolution 0.1 g or higher? We used Pols with such resolution long time at PINRO, but now Pols is not exist. I will grateful if you can provide model name and producer (and site where it will be possible to see it).
The resolution you reach depends on vessel and balance you have. Big vessel and appropiate balance will permit you 0.1 gr resolution. For my experience more than 0.1 gr is difficult to believe.
Thank you for reply! And what balance (model, producer) do you use?
Indeed, there is. I know of the Pols but it gave us problem as well. You can use the Marel motion compensated weighting scales. Just search for Marel and you will find some.
Thank for the reply. We have got two models of MAREL, but MAREL doesn't produce any balances with resolution 0.1 g, only 0.5 g.
It actually does, we have one that we use to weigh gonad and liver weights for example and it has a resolution of 0.1 (I will check the type when I am back home... M110 or something) ... remember it has to be marine motion compensated
thank you again! We tried to buy similar model in MAREL, but this model is not in the list on the MAREL site now. Probably we need to contact to MAREL representative on this model. Thank you!
Here in our lab at Cadiz we own one Pols scale with 0.01/0.02 g resolution, up to 0.130 kg.
This scale, under our usual sea conditions and ships performs reasonably well and we use it mainly to weigh anchovies and sardines and their gonads as well as many other species when appropiated. 0.1 g resolution is also used, mainly for mackerel, horse mackerel and friends up to 1.3 Kg I seem to remember (with triple resolution range, 0.1, 0.2 and 0.5 g)
Unfortunately Pols not longer exists (was, among others, phagocited by Marel) and it looks like Marel is not much interested in producing "high resolution", scientific grade scales. They are stuck to 3000 scale divisions so the highest resolution you can get from them is, as P. kainge has pointed out before is 0.1 g up to 0.3 kg.
And yes, they don't list the 0.1 g scale in the web but it exists for sure. We are on purchasing two marine scales for the lab this year and this ws one of the candidates. By the way, the actual name of the model is M2200 with platform PL2220, 0.1 g 0-300 g
Best regards
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