Coleen Suckling

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@shaanhajju3368 4 ай бұрын

Thank you! That video was straight to the point and exactly what I was looking for. I learned something valuable from it.

@romasinghal123 4 ай бұрын

So there is SE ,can we calculate STD =SE/sqrt of n

@RajA-gx5ur 6 ай бұрын

Good demonstration! Thankyou 😅

@devananthr3176 Жыл бұрын

Can we measure the salinity of sea water with this ?

@coleensuckling5276 11 ай бұрын

With some models you can, with other you cannot. If purchasing one, make sure it covers the salinity range you expect to operate across. I tend to purchase ones that have a 0-100 ppt range.

@Anichthyophile Жыл бұрын

Excellent video ma'am

@Anichthyophile Жыл бұрын

❤

@diane-mn8ou Жыл бұрын

Very nice presentation

@tom496 Жыл бұрын

Excellent video! Thank you. A little frustrating that I can't quite read what's written on the back of your left hand. Also, wondering what happens to the naughty lab users who don't properly rinse the saltwater from their refractometers. Thank you again for an excellent video.

@angelolama24 Жыл бұрын

mi buffer de 4 da 3,87 y el de 7 da 7,83. como puedo corregir esos valores?

@vladimirtitorenkov4318 Жыл бұрын

Simple said. It works good.

@thetwinsareretardstome Жыл бұрын

First

@solaimankhan1191 2 жыл бұрын

Price please

@akuandrian 2 жыл бұрын

How to calibration the conductivity?

@james9848 2 жыл бұрын

Can I use for my fish aquarium this same stuff to check the salt in 💧 water.pls reply.

@coleensuckling5276 2 жыл бұрын

Yes you can

@Janika9Z8R 2 жыл бұрын

Coleen pls hit me up. I have bought my new microscope with camera and the image is showing the adapter as a black circle. Please help me if you have time. Best regards a molecular biologist.

@b.j.g.1996 2 жыл бұрын

Thank you, That was so useful.

@coleensuckling5276 2 жыл бұрын

Glad it was helpful!

@shanghaiboquinstrumentco.l1478 2 жыл бұрын

very helpful video! by the way, we have many industrial online digital water quality instruments and sensors. here is kzbin.info/door/2tn4OUoIl6AA3MSocvo9ew . Let's together to protect our earth and make the water quality cleaner

@sandrameyfarth5368 2 жыл бұрын

Hi, Coolen! After extracting media and SE, how can I obtain the SD?

@coleensuckling5276 2 жыл бұрын

HI Sandra, You can use the same method if the graph presents the SD in the error bar. If not then you might be able to calculate it if the paper reports all of the data you need for calculating the SD. I hope this helps & thank you for watching!

@suellenlines6766 2 жыл бұрын

Thank you for this video. This is exactly what I was looking for, before purchasing one

@coleensuckling5276 2 жыл бұрын

Glad it was helpful!

@josephbednarik7955 3 жыл бұрын

I can barely hear your aduio!

@nourani3851 3 жыл бұрын

Thank you very much.

@wilfredogonzaga602 3 жыл бұрын

Hi ,can I use this Refractometer in fish processing project ,i.e sardines and the like.thanks I bought one to measure the salinity level of the finished products being processed.thanks and more power😊😊😊

@hrushikeshkulkarni7353 3 жыл бұрын

Thank you for a beautiful tutorial.

@tombowers2020 3 жыл бұрын

Always trust a lab tech with notes written in ink on their hand.

@cloudkungfu 4 жыл бұрын

Thanks for the quick tutorial!

@coleensuckling5276 4 жыл бұрын

Happy to help! Thanks for watching!

@andrewsmythe8763 4 жыл бұрын

Very good explanation for novices like me, thanks!

@alrightythen84 4 жыл бұрын

Super helpful. Thanks for making this. Couldn't get tech support to help me know this. You're a life saver.

@coleensuckling5276 4 жыл бұрын

Glad it helped! Thanks for your feedback!

@leilarad4684 4 жыл бұрын

Thanks so much for a great job, Coleen, you save me :)

@coleensuckling5276 4 жыл бұрын

Thanks for your feedback, I'm happy you found it useful!

@RaySarasin 4 жыл бұрын

I use mine to test the water in my honey it must be around 18% water before I pull it of the hive

@user-id6oi9sy1c 5 жыл бұрын

are you retailer? we are a manufacturer in China, welcome you to contact me

@jhonatanperez4118 6 жыл бұрын

I dint like your video because you dint show the saltwater test

@coleensuckling5276 3 жыл бұрын

Thanks for the feedback, I'll keep this in mind for future videos.

@jameswilliford5478 7 жыл бұрын

Distilled water will get you close, but you will get more accurate results using a 35 ppt calibration solution. I calibrated with the distilled water then tested my reef tank water and it showed 35 ppt. Then I recalibrated using the 35 ppt calibration solution and tested my water again and it was at 31 ppt.

@coleensuckling5276 7 жыл бұрын

Hi James, I agree with you, but if you're on limited budgets freshwater is a good medium to use as long as you use it consistently and appreciate its limitations. In the past we have compared the performance of the handheld refractometer to conductivity meters which are used for open water measurements and unsurprisingly the hand held is not as good, reliable or consistent in measurements. But as I say, we work with what we have and within our budgets as long as we appreciate the limitations. Thanks for your input!

@jameswilliford5478 7 жыл бұрын

Very true. I was stuck with a hydrometer for years.

@GRBtutorials 5 жыл бұрын

Or use a precision scale (you can buy one for $10) and make your own calibration solution.

@mvhemp 3 жыл бұрын

Question as I'm considering this model as opposed to the plastic hydrometer that at some point stop reading correctly... I keep seeing videos where people use RODI water to clean the refractometer. Is that necessary to wipe it clean? I know the refractometer solution at 35 ppt is recommended for calibration but this "RODI" water, is that necessary for cleaning the refractometer or could i just use sink water or even purified water??

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