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Quick Check vs Minitube SDM1 Photometer

Discuss tips and tricks used in live cover and AI situations.

Moderator: Jos

Quick Check vs Minitube SDM1 Photometer

Postby Chris » Thu Jan 23, 2014 4:12 am

Am looking at purchasing a densimeter and it seems that Quickcheck has more features than the SDM which from what I can see just gives you a count in millions/ml
Chris
Nursing Foal
 
Posts: 15
Joined: Sat Nov 03, 2012 10:17 pm
Location: Auckland, NEW ZEALAND

Re: Quick Check vs Minitube SDM1 Photometer

Postby Jos » Thu Jan 23, 2014 10:34 am

We evaluated the older model (SpermaQ) years ago in a research project, comparing it with other counters. None of the spectrophotometer models (and we evaluated about 8) consistently remained accurate when compared against a hemacytometer and there was no consistent variation (i.e. none proved to be always closer or further away from the hemacytometer count). Error margins ran up to about 20%. Although as I say we were using the older model, I suspect that the issues we saw related to cleanliness or bubble presence in the ejaculate - or even the density of the seminal plasma - and that will be present in any spectrophotometric counting device. FWIW, as a consequence, when we use our QuickCheck counter for shipping cooled semen, although ideally CS is shipped at a concentration between 25 and 50 million sperm/ml (and closer to 25 m/ml is best), we target 35 million/ml as that allows for a margin of error in the part of the counter and still falls within the desired range no matter what the error is for that reading.

Having said that, we found this factor to be worthy of consideration: The Minitube microcuvette, although it claimed to be re-usable, produced extremely unreliable replication when it was reused. The cuvette for the SpermCheck was easily cleanable and remained constant for multiple uses. The only proviso to consider in this is that the SpermCheck cuvette requires about 3 ml of semen, whereas the Minitube model uses only a very small amount, so if one has a low-volume-producing stallion, one would need to either sterilise the SpermCheck cuvettes for re-use, or else consider the Minitube model and be prepared to pay more per test by not re-using the microcuvette.

As far as the ability of the counters to calculations, yes, the SpermCheck does provide a calculation as to required volume, but it looks at only two parameters if I remember correctly (we don't use that function!), based upon fixed dilution rate in the dose. This works OK with most stallions, but if one has a stallion "on the edge" number-wise, it can produce results out of the desired range. The solution to that is to simply take the count and then enter the information into our on-line semen calculator which works on a variety of different parameters and has safety checks in place as well!
We're always happy to try and help, but don't forget to check the articles section
of the website too, which has a search engine to help you look for answers!
:)
User avatar
Jos
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Re: Quick Check vs Minitube SDM1 Photometer

Postby Chris » Fri Jan 24, 2014 5:03 am

Awesome. Thanks very much Jos
Chris
Nursing Foal
 
Posts: 15
Joined: Sat Nov 03, 2012 10:17 pm
Location: Auckland, NEW ZEALAND

Re: Quick Check vs Minitube SDM1 Photometer

Postby Chris » Tue Dec 30, 2014 5:31 pm

Bought an ARS densimeter from someone advertising here. Works great
Chris
Nursing Foal
 
Posts: 15
Joined: Sat Nov 03, 2012 10:17 pm
Location: Auckland, NEW ZEALAND

Re: Quick Check vs Minitube SDM1 Photometer

Postby Prunus1 » Thu Jul 16, 2015 6:12 am

Thank you for the comparison.
Has anyone ever used the "SDM6"?
To my knowledge it has Features comparable to the Quick Check...?
Prunus1
Neonate
 
Posts: 3
Joined: Thu Jul 16, 2015 5:48 am

Re: Quick Check vs Minitube SDM1 Photometer

Postby Kenedy » Thu Mar 31, 2016 1:47 am

Its really awesome!
Graduated from Soran University with First Class Degree with Honours in Computer Science.
Kenedy
Neonate
 
Posts: 1
Joined: Thu Mar 31, 2016 1:45 am


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