The Winkler Method

  Рет қаралды 229,923

Carolina Biological

Carolina Biological

12 жыл бұрын

Learn how to measure dissolved oxygen content using the Winkler method. The LaMotte® Dissolved Oxygen Water Test Kit used in this video can be found at www.carolina.com/environmenta... . Visit www.carolina.com to learn more!

Пікірлер: 86
@asimplenaturalist3902
@asimplenaturalist3902 8 жыл бұрын
The presentation was awesome. Easy to understand, thanks a lot.
@vu3dfq864
@vu3dfq864 7 жыл бұрын
it helped me a lot during ma exams tqs alot!!!
@Asmabs004
@Asmabs004 2 жыл бұрын
SMART demonstration. Thank you.
@IamDoubleP
@IamDoubleP 9 жыл бұрын
Thanks, this will be useful for my class.
@paulasarebekoe6299
@paulasarebekoe6299 5 жыл бұрын
Helped me a lot in my exams.. Make more of this
@sahilaggarwal2004
@sahilaggarwal2004 Жыл бұрын
Awesome explaination!
@CheckAvailabilityYo
@CheckAvailabilityYo 6 ай бұрын
Thanks for the easy to follow presentation.
@simonpeterogwal7150
@simonpeterogwal7150 2 жыл бұрын
I truly like this presentation. God bless you Miss Berkeley
@sarbeshvenkat3849
@sarbeshvenkat3849 4 жыл бұрын
what are the concs of both manganese sulfate and the alkali iodo azide solutions
@ballapranavachaitanya3975
@ballapranavachaitanya3975 3 ай бұрын
thanks really helped good for revision before lab exams
@maitripatel9070
@maitripatel9070 5 жыл бұрын
Thank you so much for this video it really helped in understanding the concepts clearly
@7sasaaal_zadjali636
@7sasaaal_zadjali636 6 жыл бұрын
What factors affect amount of DO in water?
@gilla7243
@gilla7243 5 жыл бұрын
Is there a replacement for maganese sulfate?
@angielicacabugsa8810
@angielicacabugsa8810 2 жыл бұрын
may I ask what is the chemical formula of Alkali-iodide-azide? Thanks for the response
@ETiDeQuenVesSendo
@ETiDeQuenVesSendo 4 ай бұрын
In the 3:25, after adding the acid, the bottle contains some fraction of the initial iodide ions and some iodine molecules. Is that what it makes it look orange?
@sunnykumar9184
@sunnykumar9184 7 жыл бұрын
Thanks a ton...!!
@vu3dfq864
@vu3dfq864 7 жыл бұрын
thanks a lot!!
@dr.nohaelnagdi415
@dr.nohaelnagdi415 7 ай бұрын
Does anyone know how did she get that each 0.1 ml thiosulphate is equal to 1 ppm DO?
@MrJesspod
@MrJesspod 11 жыл бұрын
Thank you!!
@87syakindaichi
@87syakindaichi 12 жыл бұрын
Do This kit suitable to bring during site sampling.. ?? I mean how long do it take for one measurement to complete.. Is it can reach to 20min(if required long time titration)
@dr.a.sreenivasulu
@dr.a.sreenivasulu 9 жыл бұрын
fine and the presentation is good
@minakshi158
@minakshi158 7 жыл бұрын
a lot of thanks
@wagenlowyikhang7019
@wagenlowyikhang7019 9 жыл бұрын
just. best subtitle everrrrrrr
@samikshyathapa4515
@samikshyathapa4515 4 жыл бұрын
Thank you 💌
@ruthalagovindu4102
@ruthalagovindu4102 8 жыл бұрын
this presentation very nice
@thulanithosalya
@thulanithosalya 10 ай бұрын
Thank you so much 😍
@kutluhankahraman6795
@kutluhankahraman6795 Жыл бұрын
what is the molarity of the sodium thisulfate? 10mmol ?
@kosgeihillary
@kosgeihillary 9 жыл бұрын
what a powerful presentation. that presentation is clear and precise. thanks
@amitisbuilding
@amitisbuilding 2 жыл бұрын
Loved it
@gitartha7
@gitartha7 5 жыл бұрын
Thank u Ma'am
@farzanashamim9994
@farzanashamim9994 7 жыл бұрын
awsm..easy to understand
@GhoOoda
@GhoOoda 8 жыл бұрын
thanks!
@jaywantdhole
@jaywantdhole 7 жыл бұрын
nice presentation
@manansuhail8693
@manansuhail8693 5 жыл бұрын
Manan Suhail 1 second ago the initial value of DO can be calculated by this method but can we calculate final DO by this method? if yes then how?. I have read that final DO is find by placing the sample in an incubator for 5 days
@mritunjaykumar3954
@mritunjaykumar3954 Жыл бұрын
Thats a method for calculating BOD(Biological lxygen demand)
@villageboy5963
@villageboy5963 3 жыл бұрын
Good job keep it doing
@shahriar3692
@shahriar3692 5 жыл бұрын
Clearly precised👌 Thanks
@kashmirshenaz269
@kashmirshenaz269 3 жыл бұрын
Who else is here after Dulan Sir’s recommendation? 😁
@elitegamer4705
@elitegamer4705 3 жыл бұрын
Dulan Maduranga. 🙂🇱🇰😍
@disrespecttha5
@disrespecttha5 3 жыл бұрын
Who is that?
@elitegamer4705
@elitegamer4705 3 жыл бұрын
@@disrespecttha5 Our chemistry teacher🥰
@disrespecttha5
@disrespecttha5 3 жыл бұрын
@@elitegamer4705 ia?
@7sasaaal_zadjali636
@7sasaaal_zadjali636 6 жыл бұрын
What is importance of DO?
@7sasaaal_zadjali636
@7sasaaal_zadjali636 6 жыл бұрын
What is Winkler method? How it is better than other methods?
@mark515a
@mark515a 7 жыл бұрын
Nicely done presentation; but curious about how your sample came to 14ppm when that is saturation point for fresh water sample at 0C..... didn't look like you were freezing! I understand there are controversies about Winkler method.
@cassygilbertson119
@cassygilbertson119 9 жыл бұрын
Watch this video with the subtitles on... so funny! =)
@danialplay
@danialplay 11 жыл бұрын
thank u
@arehchamkas6256
@arehchamkas6256 2 жыл бұрын
Watching from November 2021❤️‍🔥❤️‍🔥
@jamiruddin961
@jamiruddin961 4 жыл бұрын
thanks
@phy_ke
@phy_ke Жыл бұрын
What does it mean when the sample does not turn blue after adding starch?
@kutluhankahraman6795
@kutluhankahraman6795 Жыл бұрын
no Iodide is present in the solution
@theoneoutofnazareth
@theoneoutofnazareth 7 жыл бұрын
What happens to the DO results if you add too much Starch Indicator? I was in the field and my dropper was missing from my Starch indicator solution so I had to improvise. I ended up getting a DO that was typical for a stream, but I am just curious if I need to go to the site and resample? Thank you and great video presentation!
@dr.similadeadeodun3119
@dr.similadeadeodun3119 6 жыл бұрын
Yes, go back!
@achepy6352
@achepy6352 3 жыл бұрын
You're BM is so loud and please put the materials and apparatus used in the description
@tamaraanand2968
@tamaraanand2968 8 жыл бұрын
At 2:53 what is the name of the product formed? And what is the formula?
@zadejoh
@zadejoh 8 жыл бұрын
It's manganese sulfonate, I'm pretty sure the formula is Mn(SO4)2
@tamaraanand2968
@tamaraanand2968 8 жыл бұрын
+Zade Johnston thank you!
@wwewithphenomenal1522
@wwewithphenomenal1522 4 жыл бұрын
Subtitles are needed
@entertainyourself6797
@entertainyourself6797 8 жыл бұрын
welcome
@winviez6842
@winviez6842 Жыл бұрын
Vey easy to follow and understand. Thanks a lot
@noursalameh7199
@noursalameh7199 9 ай бұрын
kl zag
@sathyajitha9541
@sathyajitha9541 6 ай бұрын
its MnO2 and not MnOH2 incase of brown precipitate
@nagarjunhanchate5609
@nagarjunhanchate5609 4 жыл бұрын
Nice explanation friend But in India we use conical flask and burrete
@arielvega6344
@arielvega6344 Жыл бұрын
Show the sample drip like that? You just added sulfuric acid.. 😮
@ricknickwild3206
@ricknickwild3206 3 жыл бұрын
ascent is not that clear though but good work
@charlesssdavid
@charlesssdavid 3 жыл бұрын
ChemLab HAU, where you at?
@SAURABHYADAV-hk1vm
@SAURABHYADAV-hk1vm 4 жыл бұрын
So cute☺
@ba1l0rgana
@ba1l0rgana 11 жыл бұрын
Amazing! Thank you so much.
@sakilahmed5904
@sakilahmed5904 2 жыл бұрын
❤️
@VICTORBARREDA
@VICTORBARREDA 9 жыл бұрын
Que pena que no explique en español
@shubhamrajshristy795
@shubhamrajshristy795 2 жыл бұрын
Love the presentation but frankly speaking you can be a huge distraction in my NO NUT NOVEMBER XDXD
@ramerramz3167
@ramerramz3167 2 жыл бұрын
Haiii ☺️ can u put subtitles 😁☺️
@ramerramz3167
@ramerramz3167 2 жыл бұрын
please 🙏☺️😁😁
@Jkmthink
@Jkmthink 3 жыл бұрын
Who is here after Dipro vaia's recommendation
@amitisbuilding
@amitisbuilding 2 жыл бұрын
You're gorgeous
@lajoswinkler
@lajoswinkler 7 жыл бұрын
I was wondering why she says "manganate sulphamate" instead of "manganese sulphate"... but then I've remembered she says to use gloves and goggles for this. -_- Typical nervous nelly you don't want in a lab. This method is routinely done and calling for such strict safety is a laughing matter. It's not mercury salts or concentrated nitric acid...
@roirat04
@roirat04 6 жыл бұрын
Ha, dinosaurs roamed the Earth when this method was used. Nobody else uses this Winkler Method on GLP settings , unless prior calibration for older membrane tech. especially in Commercial Laboratory, It used back in early 1970s to 1980s prior to Ion Specific Ion meters , Dissolved O2 Technology. Good for a learning lesson using classical wet chemical analysis, but not for day to day use.
@sadiqueahmad6229
@sadiqueahmad6229 2 жыл бұрын
Wrong, 1 ml of Sodium Thiosulphate = 1 mg/l of Dissolved Oxygen
@feedyourfaith7392
@feedyourfaith7392 6 жыл бұрын
The person in the back was creepy.🙄
@kingrajput6202
@kingrajput6202 3 жыл бұрын
Ok sorry but she looks like Leah gotti 😐....,btw thanks mam
@velinkolev2715
@velinkolev2715 5 жыл бұрын
Shite
@08_avinashmeena57
@08_avinashmeena57 6 жыл бұрын
Wow..she is cute
@feedyourfaith7392
@feedyourfaith7392 6 жыл бұрын
Avinash Meena the one in the back not saying anything?
@vu3dfq864
@vu3dfq864 7 жыл бұрын
it helped me a lot during ma exams tqs alot!!!
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