- published: 10 Sep 2015
- views: 27212
A stock solution is a concentrated solution that will be diluted to some lower concentrated for actual use. Stock solutions are used to save preparation time, conserve materials, reduce storage space, and improve the accuracy with which working lower concentration solutions are prepared.
In chemistry, a stock solution is a large volume of a common reagent, such as hydrochloric acid or sodium hydroxide, at a standardized concentration. This term is commonly used in analytical chemistry for procedures such as titrations, where it is important that exact concentrations of solutions are used. Stock solutions do not necessarily come in concentrations of simple numbers; for example a solution could be 0.10082 M HCl.
In biochemistry, the term is often used to refer to a concentrated solution, from which one can dilute into a working concentration.
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In this video I have explained how to dilute different types of stock solutions (Molar, %, 'X' or for DNA µg/ml or ng/µl) to prepare your desire working solution. I have given the formula for dilution calculation and some examples of each type of stock solution dilutions. SUBSCRIBE TO THE CHANNEL FOR NEW VIDEO EVERY WEEK :) http://www.youtube.com/c/NowIKnow13 Facebook: https://www.facebook.com/nowiknow13 Twitter: https://twitter.com/rupalgogia Now I Know Blog: http://rupalgogia.blogspot.in/
This tutorial describes how dilutions are made from stock solutions, and how to calculate the volume of stock solution required for a given final concentration. The rules here apply equally whether concentrations are being expressed as molarity, %, mg/ml or other.
Video for BL0111 Physiology Module This is part of a series of tutorials designed to help research scientists in the use of certain software applications commonly used in scientific laboratory work. You can find the entire set of tutorial videos here: http://ehealth.kcl.ac.uk/sites/physiology/ The screencast videos have been made by the author (Dr James Clark, King's College London) in response to common questions raised by students on BSc and MSc courses and are recorded using Camtasia Studio. The content is targeted at students of all levels of undergraduate and postgraduate education as well as professional research scientists. If you wish to link to this video on another web site please make sure you credit the author and provide a link to the blog site (shown above) ©2013 James C...
How to make a dye stock solution to dye or "paint" yarn or roving.
A simple calculation to make a stock solution. I think most of you already know, but if you didn't know, here you go;)
This video takes you through the procedure for diluting a solution. VIsit www.carolinachemistry.com for all of your chemistry supplies. Carolina Biological Supply Company and Elon University School of Communications partnered to create this video
Learn how to dilute a 12 M solution
IPTG is commonly used with X-Gal, Bluo-Gal and Magenta-Gal in molecular biology labs because of its ability to induce the lac operon without being metabolized. Therefore, the initial concentration of IPTG added remains constant throughout an experiment, which allows gene expression to stay on. In this GoldBio tutorial, we show you how to make a 1 M IPTG stock solution and the best way to store your stock solution to maximize its shelf life. The GoldBio powder form of IPTG should be stored desiccated at -20°C; however, it does remain stable for up to three years when stored at room temperature. IPTG solubility creation can be an easy process. We recommend keeping this simple IPTG stock solution recipe on hand in your lab when working with any processes that involve protein expression.
The video of chlorination is shot at Jan Swasthya Sahyog, Ganiyari, Chhattisgarh.
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This video demonstrates how to prepare (and calculate) stock and dilute solutions.
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This is a narrated web tutorial to help explain some of the basic mathematics used in a research setting. In part II we discuss how to make both simple and complex solutions, as well as discuss how to determine a concentration. We also discuss how to use dilutions and serial dilutions in a research setting. It is intended as a resource for young scientists, but also serves as a refresher for more seasoned researchers, as well as a tool for helping mentors teach these important skills to their mentees.
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Exp. 18 - Spectrophotometric Analysis: Concentration of a Solution Using Beer's Law
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Click Show More for Chapter Menu: US stock futures point to a sharply higher open Monday following last week's sharp decline. On Friday we said the market felt heavy but it was tough to be short given the amount of attention being paid to the crisis by European policy makers. There was nothing concrete over the weekend, but hopes are growing that leaders will find a solution to the sovereign debt crisis. 1- Markets Snapshot 00:00 2 - Sector Spotlight - Check the temperature of the Sectors 03:47 3 -In The Trenches - Gold and Silver 09:21 4- Quick Hits - Monday's Watchlist: NFLX, HPQ, BIDU, CAT, INTC/MSFT 16:43 5- Close - 19:28