HPLC Chromatography Basics Explained

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  • čas pƙidĂĄn 2. 06. 2018
  • (You can also watch new HPLC video with demonstration here - 👉 ‱ HPLC Chromatography De... )
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    All you need to know about the HPLC Chromatography!
    HPLC(High-performance liquid chromatography) also referred as high-pressure liquid chromatography, is a technique used in analytical labs to separate, identify, and quantify each component in a mixture.HPLC separates and purifies compounds according to their polarity.
    I have tried to simplify the whole process of HPLC Chromatography and explain in simple terms. Let’s look at the main components involved in HPLC in this video.
    Later in this video, I discussed about Normal Phase Chromatography, Reverse Phase Chromatography and their comparison and differences.
    Watch this video for more details.
    Other Video Links:
    ER TO GOLGI Transport: ‱ Endoplasmic Reticulum ...
    KDEL and KKXX Sequence: ‱ KDEL and KKXX Signal, ...
    If you have any doubts: Please leave a comment in the comments section below.
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    Subscribe: / @baayo #BaaYo #chromatography

Komentáƙe • 2,1K

  • @saydfouz1942
    @saydfouz1942 Pƙed 3 lety +16

    thanks a lot for making us aware about the basics of HPLC. Before meeting you, I never thought that a person could be a teacher, support, mentor and philosopher all in one! Thank you for all your hard work and dedication!

  • @machindrasonawane559
    @machindrasonawane559 Pƙed 4 lety +95

    I think this is one of best explanation of HPLC on CZcams...

  • @anweshadas9611
    @anweshadas9611 Pƙed 2 lety +45

    12mins and the whole concept of HPLC and Reverse Phase Chromatography were understood so beautifully ❀

  • @anukrittimehra5681
    @anukrittimehra5681 Pƙed rokem +1

    This video is a boon for me because I was never able to understand biophysical techniques in class and eventually came across your channel and now everything seems sorted , thank you ❀ Ma’am your teaching style is spectacular 👍

  • @misbahmalik9752
    @misbahmalik9752 Pƙed 5 lety +15

    honestly no one can teach better than you. How perfectly you explain each n everything. Truly helpful and impressive

  • @shoaibsheikh5206
    @shoaibsheikh5206 Pƙed 5 lety +181

    I did B.Pharmacy but no body taught me like this during my college years. It was very difficult to understand by reading only theory. You have great knowledge mam and the way you explain is excellent. I am subscribing your channel now. I really appreciate your hard work. Thank you.

    • @ranjanadevi7574
      @ranjanadevi7574 Pƙed 3 lety

      Hi even I completed B-Pharm are you still studying?

    • @manisharajak6898
      @manisharajak6898 Pƙed 3 lety +1

      yes....An lg rha h Man k pass hee bsc MSc Or liya hota ..University prof..srf syllabus complete krne m believe krte😃😃😃

    • @muskanmehra9649
      @muskanmehra9649 Pƙed 3 lety

      Agreed 👍

    • @ankurpandey2713
      @ankurpandey2713 Pƙed 3 lety

      @@ranjanadevi7574 how about u? Even m doing masters in pharmaceutics

    • @parthsharma4081
      @parthsharma4081 Pƙed 2 lety

      Heyy m also in my final year of bpharm

  • @abusaleh9528
    @abusaleh9528 Pƙed 2 lety +7

    Thank You mam.I think I just want to thank you and show my gratitude because your lectures help me a lot to crack my very first interview that I faced after the completion of my post-graduation.Your tutorials are extraordinary to understand.Things would become harder without your videos.Wish your success in every steps of your life ❀❀❀

  • @princesharma6166
    @princesharma6166 Pƙed 3 lety +4

    Most easiest and valuable information about HPLC on CZcams... respect to you mam đŸ‘đŸ»đŸ‘đŸ»

  • @ankitamewara2649
    @ankitamewara2649 Pƙed 5 lety +9

    Lives simplified by your simple way of explanation . Amazing.

  • @avanraws77
    @avanraws77 Pƙed 5 lety +9

    Your lectures are very detailed and informative; you are a very good lecturer...keep up the good work!

  • @bhawnaa_
    @bhawnaa_ Pƙed 3 lety +5

    Absolutely amazing teaching. Very proper point to point knowledge. So much helpful and accurate. ❀❀❀

  • @incognitoburrito8
    @incognitoburrito8 Pƙed 3 lety +1

    You're the best, you teach exactly what students need to understand unlike the rest of videos available here where they just talk bookish language

  • @mdsadek1424
    @mdsadek1424 Pƙed 3 lety +5

    I don't find any reason to dislike such an wonderful lecture

  • @varsharani9062
    @varsharani9062 Pƙed 3 lety +5

    Thank you ma'am for explaining in such an amazing way , this clear all my doubts.!! 💓

  • @user-vr6ul8mk1y
    @user-vr6ul8mk1y Pƙed 6 měsĂ­ci

    Hello Ma'am! Yesterday, I saw your HPLC video for my job interview. To be honest, I swear on the name of God, for the first time in my life I have properly learned the concept of HPLC through your video. Lots of Love from Pakistan.

  • @SheikhLateef
    @SheikhLateef Pƙed 2 lety

    I m watching this video again after 3 yrs. And Thanks mam. i wish i could attend ur class in front of uh ..and. i deeply love with ur style of teaching

  • @sailajamaddali3337
    @sailajamaddali3337 Pƙed 5 lety +13

    Thank you very much for your presentation. Would like to know about the buffer you mentioned to equilibrate before the sample run (getting the base line). can you explain more about the equilibration and the buffers to use thank you!

  • @GuptaGVlogs
    @GuptaGVlogs Pƙed 4 lety +6

    thanks mam,,, i have not comletely understand in 8 yrs in pharma industry and by ur video i just understand in 10 min ..... now i will not forgot this in my whole life....great job..

    • @BaaYo
      @BaaYo  Pƙed 4 lety +1

      Thanks a lot Ashwani for kind feedback 😊

  • @VidhiKachadiya
    @VidhiKachadiya Pƙed 2 lety

    Very good and nicely explained in a simple manner... I found HPLC difficult, but after watching this my all doubts are cleared 👍👍

  • @fatimarao793
    @fatimarao793 Pƙed 4 lety +2

    Mene kbhi itni achi explanation nhi li kisi female teachers se u r the 1st one.... Well thanks ❀

  • @drkiranpharmacy5114
    @drkiranpharmacy5114 Pƙed 5 lety +4

    Excellent & Very Simple Clear & Nice Explanation Madam. Which is Very helped me to Understand clearly. I am Preparing for State Level M.Pharmacy Admission Entrance Exam i am also preparing for GPAT - Graduate Pharmacy Admission Test. Madam thank you very much for Preparation and Upload your Excellent Videos. These are very much useful to B.Pharmacy Students and M.Pharmacy Students who are Preparing Pharmaceutical Analysis Subject (Chemical Analysis).

  • @farhanarashid3094
    @farhanarashid3094 Pƙed 5 lety +17

    thank you so much mam for explaining in a good way

  • @005abdulbasit8
    @005abdulbasit8 Pƙed 2 lety

    Thanku so much ma'am
    I just listen you're lectures chromatography & types of chromatography before last day of my exam I gain too much point easily & my concept is clear.
    Thanku soooo much

  • @sushantpople
    @sushantpople Pƙed 2 lety

    I was very worried about my MSc Bioanalytical Science's , due to online studies i never understood the any chromatography techniques, but today only i found this channel i saw hplc video and now i am not having doubt..i will going to watch more videos, Requesting to please add Bioanalytical related topics..thankx

  • @sauravanand1738
    @sauravanand1738 Pƙed 5 lety +5

    So simple and much effective explanation... Thank you so much

  • @user-pb6bc5rn9u
    @user-pb6bc5rn9u Pƙed 2 měsĂ­ci +3

    I am a researcher, your video helped me to understand basics of HPLC. VERY GOOD TEACHING STYLE ! KEEP IT UP.

    • @BaaYo
      @BaaYo  Pƙed 2 měsĂ­ci +1

      Thank You :) Happy to help

  • @madhurigupta8494
    @madhurigupta8494 Pƙed 4 lety

    It was a very well put and precise in concept explanation, otherwise I have to run around searching for separate topics including the mechanism, principle and instrument layout

  • @sindhuvelpula678
    @sindhuvelpula678 Pƙed 3 lety

    I have learnt so many things through ur video
    I got placed after watching ur videos❀my dream has come true. Thanks alotđŸ„ł

  • @himanshumishra1720
    @himanshumishra1720 Pƙed 4 lety +3

    Thank you so much ma'am 😇😇😇 it is really beneficial for me & all those students who are looking for good carrier in biochemistry.

  • @kidsofkhans6336
    @kidsofkhans6336 Pƙed 4 lety +4

    As tomorrow is my exam. . . . . But m still watching ur video as my revision. . . . . . Coz u r a best teacher. . . . . Thanks a lot for ur work. . . . . 😘😘😘😘😘

  • @avaneetyadav2066
    @avaneetyadav2066 Pƙed 3 lety

    Am seeing after 2 year... explained easy more than expecting .. its so simple after seeing this video .....đŸ”„đŸ”„

  • @saurabhsharma5403
    @saurabhsharma5403 Pƙed 3 měsĂ­ci

    Wow mam ,i was in so much stress like there's so many things to study but now i have so much clearity thank you so much

  • @nirajsalvi9786
    @nirajsalvi9786 Pƙed 5 lety +8

    Thank mam
    U are great
    I want to know about more vedio
    Like kf, gc, HPLC, and their tribal shooting
    In industrial use

  • @rameezah9404
    @rameezah9404 Pƙed 6 lety +6

    It was woow lecture simple way n easy. stay blessed mam.

  • @sagorikagogoi89
    @sagorikagogoi89 Pƙed rokem

    You took my heart..M soooooo happpppy. That I found your videossss...... sooooo Thankful to you. Maam

  • @viswanathvittaladevaram4260
    @viswanathvittaladevaram4260 Pƙed 3 lety +1

    Simple and precise explanation.Just perfect what needs to be understood about HPLC.Good informative video.

  • @pujakumari8787
    @pujakumari8787 Pƙed 5 lety +7

    madam, in many cases multiport valve , buffer volume, pulse damper, n guard volumes are used . why?

  • @sonalirp21
    @sonalirp21 Pƙed 3 lety +8

    The what and why for each step explained thoroughly
    Thank you for this amazing lecture

  • @sandeepkalita7125
    @sandeepkalita7125 Pƙed 2 lety

    Thank you Arti Ma'am,
    It's very easy to understand if the teacher taught it in the way they themself understand.

  • @gavsraw7812
    @gavsraw7812 Pƙed 3 lety +1

    Perfectly explained, I searched this content first time.
    Thanks.🙏🙏

  • @arpittyagi6404
    @arpittyagi6404 Pƙed 5 lety +3

    Thank You so much Ma'am for such nice explanation..

  • @sushreepriyadarshanimahapa1766

    Tq mam ...tq so much.because of uh i can cover..... my +3 final year DSE-1 papper successfully 😍love from Odisha 😊

  • @akiakritigupta
    @akiakritigupta Pƙed 3 lety +1

    Thankyou ma'am, you have explained the topic very clearly.. this video has made my concept more clearer... 😇

  • @amardeepchaurasia7515
    @amardeepchaurasia7515 Pƙed 2 měsĂ­ci

    You have amazing Knowledge and great way to transfer this knowledge to others. Thanks , it will help me for M.PHRAMA

  • @63-sayalimane7
    @63-sayalimane7 Pƙed rokem +3

    Mam you are saviour for us before theory exam 👍

  • @ferozahmedshaikh4206
    @ferozahmedshaikh4206 Pƙed 5 lety +3

    Thanks for making simpler I have subject about analysis in Pharm D course

  • @ghulammuhammad5391
    @ghulammuhammad5391 Pƙed rokem

    Thank you ma'am .your teaching methods is amazing.l understood only in one seen .no one saw in my uni like you .

  • @dnrfam8688
    @dnrfam8688 Pƙed 3 lety

    Im a big fan of you mam.u r explaining so simply each nd every topic.Ur lectures helping lot me to cover all topics

  • @Bhanuprakash-pe9so
    @Bhanuprakash-pe9so Pƙed 5 lety +8

    Thank u so much ma'am 😊.. I was searching for this topic from long time and no one explained it in this cool manner . Firstly i thought u will not explain well but no other video explained as good as u â€ïžâ€ïžđŸ™. Thank u so much for your valuable time for us(students)

    • @BaaYo
      @BaaYo  Pƙed 5 lety +1

      Thanks Prakash 😊

  • @harleenkaur436
    @harleenkaur436 Pƙed 5 lety +11

    Thank you ma'am Tommorow is my environmental chemistry paper and I am going to write the same .....after watching chromatography videos and this one I feel it's simpler now

    • @BaaYo
      @BaaYo  Pƙed 5 lety +2

      Thanks Harleen...and all d best for tomorrow..👍

    • @chemistrybymirha4480
      @chemistrybymirha4480 Pƙed 2 lety

      @@BaaYo mam aik question hai answer kijya ga
      How hplc differ form column chromatography

  • @drmahejabeen3920
    @drmahejabeen3920 Pƙed 3 lety

    Good explanation.... loved the video... didn’t even go back to read the theory stuff...very simplified and well explained... keep up

  • @nishanttiwari8029
    @nishanttiwari8029 Pƙed 3 lety

    Thank you ma'am because I got job in ion health care baddi of himachal Pradesh, aap ne itna simple ho kr btaya Qa department m join kiya hun, mere pas thoda sa speak m problem h.... Mein Msc microbiology se 2015 kiya tha.... Thank alot ab mein sar utha kr chaluga thanks alot apka hr video interview prepared krne m bhut help kiya yeh meri pehli job h

  • @kiransg938
    @kiransg938 Pƙed 3 lety +3

    Hi mam, I want to quantify triphenylantimony from my sample, for that which mobile phase n which column is needed?

  • @sannisaimon
    @sannisaimon Pƙed 5 lety +3

    Thank You MAM very nice explanation.

  • @--AgamdeepSingh
    @--AgamdeepSingh Pƙed rokem

    mam u are nirraa ishq teacher what a beautiful explanation of hplc..kudos to your hardwork 💯

  • @vishalkumarsingh6703
    @vishalkumarsingh6703 Pƙed 3 lety

    So amazing techniques of teaching
    Very simply delivers all concept of HPLC , Thanks 🙏

  • @PrinciThapak_scienceelite
    @PrinciThapak_scienceelite Pƙed 3 lety +7

    Your lectures helped a lot in my studies... Please keep making these videos...😊👍

  • @omprakash3456
    @omprakash3456 Pƙed 5 lety +8

    Make Vedio on Isothermal titration calorimetry (ITC) and Differential scanning calorimetry (DSC)

  • @florashlaks
    @florashlaks Pƙed 2 lety

    I'm a pathology PG student, thank you so much for this... Even dacie or Tejinder don't have these explanations

  • @lucienearth
    @lucienearth Pƙed 3 lety +1

    Ma'am your teaching style is Unique and very much convincing.. I became die hard fan of your videos.. Please accept my regards, Ma'am..

  • @moni_upadhyay
    @moni_upadhyay Pƙed 5 lety +3

    Thank u ma'am for giving better explanation & plz make a video on diff.types of electrophoresis ..

  • @BilalAhmad-sr5uw
    @BilalAhmad-sr5uw Pƙed 5 lety +9

    Mam.u r best teacher..u teach very well.and u r very pretty

  • @bint-e-hawa4389
    @bint-e-hawa4389 Pƙed 3 lety

    you are a great great teacher i learned from this video more than I did in university

  • @chikoogupta899
    @chikoogupta899 Pƙed 2 lety

    zindagi me pehli bar koi cheej itne ache se clear hui hai

  • @hasanshawon1421
    @hasanshawon1421 Pƙed 5 lety +13

    I got my job...they asked me about HPLC ...love from bangladesh 💓💓💓

    • @BaaYo
      @BaaYo  Pƙed 5 lety +4

      wow congratulations !!

    • @amitavsen8193
      @amitavsen8193 Pƙed 4 lety

      which company? where u come from?

  • @hirendevani551
    @hirendevani551 Pƙed 5 lety +3

    Mem , please make Electrometric method Videos....
    Thank you.🙏

  • @manalisingne6551
    @manalisingne6551 Pƙed rokem

    Thank you so much for making this vid ma'am... Best ever explanation on CZcams 😃

  • @anshikasharma7768
    @anshikasharma7768 Pƙed 3 lety

    Thank you so much ma'am ...maine aaj hi aapka channel dekha h aur aapne bhaut acche se smjhaya hua h .... Kl mera exam h ...m really very happy i was tired of reading the books n all stuff but this is very interesting ...đŸŒș

  • @muhammadnaseer5016
    @muhammadnaseer5016 Pƙed 5 lety +7

    I'm from Pakistan your lectures are very helpful thanks Madame.

    • @BaaYo
      @BaaYo  Pƙed 5 lety +1

      Thank You Naseer 😊, glad to hear that my videos are being watched in neighbouring countries đŸ™đŸ»đŸ˜Š

    • @Impromptu21
      @Impromptu21 Pƙed 5 lety +1

      Ya

    • @mirhusamuddinwasif929
      @mirhusamuddinwasif929 Pƙed 5 lety +1

      Me also

    • @somalnisar6295
      @somalnisar6295 Pƙed 5 lety +1

      @@BaaYo yes mam your way of teaching is very good and easy....everyone can understand it....mam kindly also mention tge name of buffer solution and mqke video on chiral chromatography 😊 respect from pak

  • @maninderrana3664
    @maninderrana3664 Pƙed 5 lety +3

    Thanks mam very informative and clear plz make a video on how to standerdization hplc machine for to check diffre t component in a blood sample thanking you

  • @ayeshasiddique9656
    @ayeshasiddique9656 Pƙed 4 lety +1

    thank you so much.. tomorrow is my presentation , this video is very very helpful for me

  • @user-yk1sx2hx3u
    @user-yk1sx2hx3u Pƙed 11 měsĂ­ci

    Thank you so much Ma'am.... Allhamdulliah....I have learned a lot about HPLC after watching this vedio.... Mashallah.....it's just because of Allah almighty and then by your Wonderful lecture....

  • @Impromptu21
    @Impromptu21 Pƙed 5 lety +3

    Excellent mam

  • @BaaYo
    @BaaYo  Pƙed 9 měsĂ­ci +5

    To access notes and practice questions, please join our Telegram channel t.me/baayo_official

  • @harshmishra5372
    @harshmishra5372 Pƙed 2 lety

    Ma'am I really like the way you teach... Your way of teaching is just as beautiful as you❀

  • @aishafazal3036
    @aishafazal3036 Pƙed 3 lety

    Remarkable way of explanation mam. Kindly upload lectures on Electrophoresis too. I couldn't finf any of your lecture on Electrophoresis. You explain each any everything very precisely. After taking your lectures not getting other lecturers .

  • @laxmikantvharte5628
    @laxmikantvharte5628 Pƙed 5 lety +5

    Super mam. ELISA per Video banav

    • @BaaYo
      @BaaYo  Pƙed 5 lety +1

      Thanks laxmikant.. Jaldi bnaugi..:)

  • @BaaYo
    @BaaYo  Pƙed 5 lety +5

    Hi Guys, Please watch our new videos on
    Mass Spectrometry czcams.com/video/w3LS22E10Zc/video.html
    UV- vis spectroscopy links.. czcams.com/video/1mrUHrZ-0zk/video.html
    Gas Chromatography czcams.com/video/0KqaIKHzHE8/video.html
    and please share your valuable feedback. Thanks.

    • @Kapil5462
      @Kapil5462 Pƙed 5 lety

      U r cool..
      Keep it up

    • @prashantrajput4465
      @prashantrajput4465 Pƙed 5 lety +1

      Pls make a video to calculate peak area in HPLC and how to quantify?

    • @BaaYo
      @BaaYo  Pƙed 5 lety

      Noted. surely will make one. thanks

  • @vipuldhand2026
    @vipuldhand2026 Pƙed 4 lety

    Thankuuuu sooo much mam... U can teach all chomatography methods .... U r very great teacher thankuuu so much

  • @RohitYadav-em8gf
    @RohitYadav-em8gf Pƙed 3 lety

    Hats off to u.... You r leaving your child crying for making videos for us

  • @dr.azazahemadkureshi9848
    @dr.azazahemadkureshi9848 Pƙed 5 lety +3

    Wonderfully delivered ma'am,,
    I am on the edge of completion of my Doctrol studies at NIT Surat...and my entire work is on natural products chemistry...
    These lecture series may play a good role to improve my basics...
    Please share your email or linkedIn id maam!

  • @Impromptu21
    @Impromptu21 Pƙed 5 lety +5

    Jo ki hydrophobic the

  • @AnasKhan-up9ic
    @AnasKhan-up9ic Pƙed 2 lety

    Your explanation is very easy and to the point, thanks for explaining

  • @namanlohani7868
    @namanlohani7868 Pƙed 2 lety

    You are doing great job mam , you have our respect
    Thanking you from the bottom of my heart 🙏🙏🙏🙏

  • @biorainbows4313
    @biorainbows4313 Pƙed 5 lety +28

    I wish this had english subtitles :(

    • @amorestperpe
      @amorestperpe Pƙed 5 lety +5

      LMAO. I wasn't sure if she was jumping in and out of English or her accent was just that heavy. I thought she just had a heavy accent

  • @lovepreetkaur6746
    @lovepreetkaur6746 Pƙed 5 lety +6

    Maa'm plzzzz make A video On UV spectroscopy 🙏🙏🙏🙏🙏🙏 plz itsss request maa'm

    • @BaaYo
      @BaaYo  Pƙed 5 lety +1

      Hi Lovepreet, Sorry for the delay. I was on break for two weeks, I will make video on this soon and upload it. Thanks for follow up.

    • @prashantjagdishkhedekar2895
      @prashantjagdishkhedekar2895 Pƙed 5 lety +1

      Ha mam uv pe banaiye jaldi

    • @BaaYo
      @BaaYo  Pƙed 5 lety

      Hi Prashant, UV Visible Sepctroscopy video is live now.
      Watch it on below link:
      czcams.com/video/1mrUHrZ-0zk/video.html

    • @BaaYo
      @BaaYo  Pƙed 5 lety

      Hi Lovepreet,
      Based on your request, UV Visible Spectroscopy video is upload now :). Watch it at below link:
      czcams.com/video/1mrUHrZ-0zk/video.html

    • @amuandeep1240
      @amuandeep1240 Pƙed 5 lety

      @@BaaYo thanks a lot maa'm 🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏

  • @nabanitamallick9049
    @nabanitamallick9049 Pƙed rokem

    Thank you so much ma'am for explaining HPLC so well.. you are great ❀

  • @vishwapanchal3101
    @vishwapanchal3101 Pƙed rokem

    Amazing explanation mam...simply amazing of u ...u make the topic easy n short to understand. Less time is consumed for understanding a particular topic. thank you mam

  • @venuy2836
    @venuy2836 Pƙed 3 lety

    So simply and more effective explanation

  • @nitikasharma2448
    @nitikasharma2448 Pƙed 3 lety +1

    Thank you so much Ma'am .. finally many of my doubts clear now.. 🙏

  • @mominurrahman9859
    @mominurrahman9859 Pƙed 6 měsĂ­ci

    Hi, This video is really helpful for me. Keep making these types of resourceful video. Thank you so much.

  • @ABIGMITSAKE
    @ABIGMITSAKE Pƙed 2 lety +1

    Excellent video and clear and concise presentation. All the best for future work. I have a question, if it is possible for you.. could you please make a small video on how to interpret the chromatogram using actually HPLC equipment?

  • @mukeshsoni593
    @mukeshsoni593 Pƙed 4 lety

    Excellent explanation, thank you for sharing the knowledge

  • @zainabzara399
    @zainabzara399 Pƙed 2 lety +1

    Very effective lecture ma’am thanks a lot for providing such a great info♄

  • @himanshupathak5501
    @himanshupathak5501 Pƙed 3 lety

    The concepts about instrumentations explained by ma'am help me a lot in my examination

  • @chemtopesp.mattapally6907

    Thank you ! you explained in a very easy understanding way.

  • @dharmendrachaudharydc5909

    You are the best discriber of instruments in my knowledge

  • @jamyyy9523
    @jamyyy9523 Pƙed 3 lety

    Crisp explanation of hplc.
    Extremely helpful.Thank you Mam

  • @sourabhshetake0909
    @sourabhshetake0909 Pƙed 3 lety

    Superb explanation mam.thank u so much . U r such great teacher .hats off u

  • @omkardhage2211
    @omkardhage2211 Pƙed 3 lety

    thank you mam im student from final year b pharm . you explianed hplc in very simpler way just like a basic hint about it . really helpful as due to lockdown this online coaching cuase difficulty in understanding concept but you made it simpler . again nicely done