It's amazing that this channel makes it possible to practice straight away, making it very easy for us to work in the laboratory. Thank you🙏

I can never find someone explains better than you did . Thank you

I really appreciate your effort for showing as such an amazing virtual lab. All the description was exactly in touch with each and every moments of the whole experimental framework. # as a reminder, please present as how wijs reagent is prepared in lab. Thanks.

Great presentation! Please continue the good work. Knowledge is for sharing.

This is the best channel I have ever seen, thanks for your effort ❤

I have learn a lot through this your channel sir Thanks for bringing value to this noble channel. I appreciate your effort.

it's good job.thank you very much

You are awesome! Thank you for sharing!

All tests which i need in solvent plant laboratory testing, all tests are there on your channel thank you so much

What an excellent explanation ❤❤ thank you so much

Thanks for your wonderful and passionate video. It's really useful for my work. I wonder some point that could you explain for me, please. 1. Why we certain use Carbon Tetrachloride in this experiment. Can you explain in detail the reason why you use Carbon Tetrechloride? Can I replace it by other substane? 2. I wonder if you put Potassium Iodide crystal around the stopped? Why don't we use the solution of Potassium Iodide? 3. In the phase that you pour distlled water into the flask, you titrate the flask with Sodium Thiosulfate until the yellow is lighter before you add the starch solution in the flask. So I wonder the reason why you must to titration before adding the starch solution. Is there any theory in this phase? I really want to know. I truly appriciate your support and I am looking forward to hearing from you. Many thanks

I like your explanation and demonstration Thanks

Before do any lab experiment i search it your channell.it is very usefull to me. Though i get wuections😉😊😊😊😊

Thank you so much for your important video❤❤❤

Thanks for sharing with us your valuables information

Appreciate your effort on preparing such useful videos.

Thanks. Was helpful for exams in my masters Thanks a lot

Informative video tutorial.

this was so well explained💝

1. Quality testing of raw as well as finished products of confectionary. 2. Preparation of: 1. candies, 2. Caramel, 3. toffees. 3. Collection of various types of confectionary packages. 4. Determination of sugar in confectionary product by saccharometer. 5. Determination of refractive index of sugar - solutions of different consistencies

Nice your analysis

You are just superb!! Can you plz make a video on sugar determination from carbohydrates...i mean fehling solns..at which point we can consider the end of the titration.

Thank u so much ...☺️

Very informative video

thank you

Hi, thanks for making this video! It is really helpful. I have been doing my experiment about how the number of times heating the corn oil till boiling will affect the oil’s iodine value and I realized that as I did titration, there was a layer of oil-like solution at the bottom of the flask. Do you know anything about this and why does it happen? Because it has became really obvious and disturbing since the oil darkened as the heating number increased.

Its It's very good to see experiment very clearly I have thought our chemists by showing the video... many thanks... Please update USM UNSAPONIFICATION MATER ALSO

Thanks

Thanks for your knowledge sharing... please make a video on "urease activity of soya bean meal"...

nice

thank you for making a test video tutorial like this. the video is very clear and easy to understand. It's just that there are some points that explain it too quickly, so I feel that there is something missing, but it turns out that the explanation is just too fast.

Hello, may i ask what were the molarity of the Wijs solution and carbon tetrachloride used here? I would like to see how i can change the calculations if i am using different concentrations

Hi MicroChem´s, can i make this determination of iodine value in activated carbon??

Who the hell disliked. Idiots...perfect demonstration. Pls low noice back ground sound adjust. We lv your channel.thanks. plc to hplc aflatoxin analysis

Super

If the blue color keeps coming back within the 30s, what could be the problem? Right after turning milky-white, the blue color returns. This happens repeatedly even after titrating more of the thiosulfate

Ihave iodine mono chloride in the labe but if iuse it it doesnot give me the good reading for the blank low readeing what can ido any way to increse the wigis solution strength

There's a mistake in your analysis the equivalent weight of sodium thiosulfate is 248.16g so if we want to make 0.1 N Sodium thiosulfate we need 24.6g not 2.48 g

hi , I enjoyed the video but shouldn't the sample amount been pipette out instead of poured in because the majority of the sample was on the side of the flask not at the bottom

How to prepare wij's solution?? 50ml iodine monocloride desolved in how many acitic acid in ml?? Please🙏 reply

Hi love the video！Just wanted to ask why put the flasks in dark for 30 min？will the time of this have an effect on the titration?

Can please ask why are we still multiplying with normality if we have converted to mass already?

Thank you for this vid. I just want to know, how do you handle these chemicals as waste after the analysis?

here because of biochem lab hehe

My question​ is not about AOAC but about AOCS methods, that before weighting the sample, sample must adjust temperature to 68 -​71 celsius deg. I wonder what is the purpose of sample temperature​ adjusting?

Can you guide me how to calculate ! Especially the blank thinks

AOAC Official Method 920.159 *lodine Absorption Number* of Oils and Fats, this is the method that I referred to.

This was great work. One question, wouldn't the KI crystals placed on the top interference with the reaction?

I watch iodine value analysis video many time.which is very good & clear.but i want to know without putting iv flash in dark test can be done?

Very useful information, however one issue tho, you do not heat a Volumetric Flask!

Hi, I was wondering why is it so important that it should be closed immediately after pouring the wij's solution. By the way, this is a great video it has helped me so much. If you have any other papers, videos, or references about determining iodine value in oils by wij's method I would be thrilled If you could reference it. Again thank you.

Where can I buy or how can I get the AOAC manual for the different methods? I'll still keep watching you! 🙏🐾

please how can Ido iodine value in oil by automatic titration machine ihave thermo brand t940 orion this test is redox and back titration but cant to do the steps can any one guide me

Nice good explanation,i have one question,Why we kept sample in a dark place for exact 30 minutes.

Which oil u have used in this pls tell

plz also give the reason behind adding any chemicals in the given experiment .

please make a video on henus method.

Sir please make a video for urea activity check for foods all 3 method

Also when I carry out the procedure, there is a purple coloured layer at the bottom of the solution in the blank and a pink coloured in the sample, do you know anything about this?

Ma'am I have a simple question what is purpose of this test or what does tell us this test?

Thank you for sharing. may ask question why add KI at neck of flask when during preparation of sample and blank?

Calcium magnesium phosphorus ka bi video bnao mam

It was great work. I have a question? Will there be any problem if I use saturated KI solutions?

Stearic acid iodine value test is same??

Please post a Video for Determination of TVBN in Dried Fish Meal sample AOAC

Hi, thank you for the video! But I have a question. What is the purpose of adding potassium iodide crystal? And can you quantify the amount of potassium iodide crystal added around the surface of the stopper? I'm a student planning to do this experiment in schoolwork.

Hi could you please let me know any alternative for CCL 4 ( apart from chloroform ). Thanks

I have been given unknown kind of fat or wax maybe but the point is this sample is in solid nature, how will I predict it's Iodine value so that I'm able to weigh the supposed weight of the sample?

Iodine molecular weight is 126,90477 g/mol . Why was this (12,69 g/mol ) written in the formula?

how does heat affect this experiment? how would I heat the solution after keeping it in the dark if I want to check temperature affects on iodine value?

i took 0.216 gm sample of groundnut oil its value came 93. isit in expected iv range or this answer is wrong

Hi. Why did you not add 10-15% KI b4 stopping with water? Thank you!

please Mr microchem's experiments I need in full proximate analysis of white yam dioscorea rutundata , sample preparation procedure , tables and calculations.

Blank me starting me kya liya tha befor adding ccl4

👍

Can you please help me with a soft copy of the method Thanks

Nice explained. How do we calculate iodine number for activated carbon.

Hi, what's the concentration of wij's solution did you use?

Pls one video iodine value in activated corbon

What is the unit.? Of IV in this calculation.?

Plz add the vedio that minaral oil test in edibal oil

0.21 gm sample h to expected iv groundnut oil me kitna hona chahiye

Hi! where is the sample based on the expecetd iodine value table from? I cant find it on the internet

1. During titration, iodine flask should've been covered with the stopper throughout in order to avoid the escape of iodine gas. 2. calculation should've shown the units also 3. It should've been 126.9 g/mol, since that is the molecular weight of iodine.

Plz share video on determine residual chlorine in water

Why don't we add starch indicator in the beginning of titration? What only when the colour of the solution becomes lighter?

what is the difference between this method and ASTM D4607-94 method? Can I use this method for activated carbon?

Hii! first of all, your videos are very helpful. But may i ask something, why is blank titration necessary in the this determination(iodine value det.)? I hope you answer me ,thank you so so much

Can you give me the "Determination of Oil Analysis" manual if I need it?

Thanks for the video, But if result 38 for olive oil and compared with reference rang and show less than from rang what writing comment?

Where Didi you get this 12.69

Hi Mam Is it possible to analyse cholesterol content in edible oil by volumetric titrations..??? Without chromatography or spectroscopy plzz reply me mam...

How can we measure the iodine of activated charcoal? Please help us on how to measure it. Thanks for the time!❤️

please make a video total fatty matter (TFM) analysis in oil not in soap

i have prepare Wij stock solution using 50g ample in 500ml (makeup)acetic acid and for working solution i have take 80ml of stock solution and makeup with 500ml of acetic acid is this correct

Please how to prepare Ipa lactic acid solution for sv test of wheat flour.

what does the potassium iodide do, is it needed for the experiment

After preparing sample in IV flask And during kept in dark for 30 minutes why we use KI Salt on the top of the cap of the flask ??

Pls can you teach us method validation and uncertinity calculations for aflatoxins. B, G types

hello! what is the solvent used fir wij's solution? can water be used?