what flask is used for dilution
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Volumetric flask Volumetric flask. Volumetric flasks of various sizes. A volumetric flask (measuring flask or graduated flask) is a piece of laboratory glassware, a type of laboratory flask, calibrated to contain a precise volume at a particular temperature. Volumetric flasks are used for precise dilutions and preparation of standard solutions.
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Pipette Volumetric pipettes or bulb pipette allow the user to measure a volume of solution extremely accurately (accuracy of four significant figures). These pipettes have a large bulb with a long narrow portion above with a single graduation mark as it is calibrated for a single volume (like a volumetric flask).olumetric pipettes or bulb pipette allow the user to measure a volume of solution extremely accurately (accuracy of four significant figures). These pipettes have a large bulb with a long narrow portion above with a single graduation mark as it is calibrated for a single volume (like a volumetric flask).
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- The setup shown (Figure 16) is a modified simple distillation apparatus wherein a claisen head is added in between the boiling flask and the distilling adapter. The purpose of this is to provide a second opening into the system to accomodate a source of steam or the addition of water.he distillation flask is a round-bottom flask and is often referred to as the pot. The liquid to be distilled should fill the distillation flask to 1/2 to 2/3 of its capacity. If the flask is too small, the liquid is likely to bump or foam over into the receiving flask without vaporizing.
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Dilution assay From Wikipedia, the free encyclopedia. The term dilution assay is generally used to designate a special type of bioassay in which one or more preparations (e.g. a drug) are administered to experimental units at different dose levels inducing a measurable biological response. The dose levels are prepared by dilution in a diluent that is inert in respect of the response.
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- 1 MATERIALS: Dry 250 mL Erlenmeyer flask, piece of foil (~3” x 3”), rubber band, 800 mL beaker, 500 mL. graduated cylinder, iron ring, ring stand, wire gauze, Bunsen burner, test tube clamp, Hot Hands. PURPOSE: The purpose of this experiment is to determine the molar mass of an unknown liquid by measuring. properties of its vapor phase after heating.
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- A useful laboratory experiment for the evaluation of coagulation/flocculation of an untreated. water is the jar test. This test provides information on the effect s of the concentrations of t he coagulants, mixing of the raw water, and the wat er quality parameters such as pH and alkalinity on the coagulation. process. The jar test is often used for the design of treatment facilities and in the routine operation of. treatment plants.
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Erlenmeyer Flask: Function & Dimensions These tools range from complex and sophisticated machines to simple, basic equipment. Basic equipment is necessary for routine experimentation and routine measurements. One of these basic pieces of equipment includes the Erlenmeyer flask, which is commonly found in most scientific laboratories. Let's discuss the Erlenmeyer flask and its uses in scientific experimentation.
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What is a titration reaction? A buret is used to deliver the second reactant to the flask and an indicator or pH Meter is used to detect the endpoint of the reaction. Source(s): found it here - complete with photos and step by step instructions: http://www.dartmouth.edu/~chemlab/techniques/titration.html.
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How Do I Work Safely with - Flammable and Combustible Liquids (Static Electricity) To prevent the build up of static electricity and prevent sparks from causing a fire, it is important to bond metal dispensing and receiving containers together before pouring. Bonding is done by making an electrical connection from one metal container to the other.his buildup of electrical charge is called static electricity. Even when liquids are transported or handled in non-conductive containers, something rubbing the outside surface of the container may cause a static charge to build up in the liquid.
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What is a crucible and how is it used in a laboratory? See the related questions and links below for more information. A crucible is used to hold small amounts of chemicals during heating at high temperatures. The lid covers the bowl so nothing escapes, or to keep oxygen out of the reaction. See the related questions and links below for more information.
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- Now transfer a 1 mL aliquot of this solution to another 100 mL volumetric flask-do not dilute yet. This will be referred to as the prepared unknown. 3. Into five 100 mL volumetric flasks, pipet (volumetrically) 1, 5, 10, 25, and 50 mL portions of the standard iron solution.
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Laboratory flask Laboratory flasks are vessels which fall into the category of laboratory equipment known as glassware. In laboratory and other scientific settings, they are usually referred to simply as flasks. Flasks come in a number of shapes and a wide range of sizes, but a common distinguishing aspect in their shapes is a wider vessel body and one narrower tubular sections at the top called necks which have an opening at the top. Laboratory flask sizes are specified by the volume they can hold, typically in metric units such as milliliters (mL or ml) or liters (L or l). Laboratory flasks have traditionally been made of glass, but can also be made of plastic.
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- Used for weighing substances or objects, usually in grams. erlenmeyer flasks. Used to heat, mix, and store liquids. The advantage to the Erlenmeyer Flask is that the bottom is wider than the top so it will heat quicker because of the greater surface area exposed to the heat.
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Flask An Erlenmeyer flask or conical flask. A flask is a type of container made of glass. They are a common piece of apparatus used in laboratories. Their size are chosen by the volume they can hold, and is measured in metric units, like litres (L) or mililitres (mL).
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What is Titration? A textbook setup for an acid-base titration involves the solution of known concentration, called the titrant, suspended in a buret above a flask containing the unknown solution, or titrand. The buret is a calibrated vertical tube with a stopcock at the bottom of it to regulate the flow of the titrant into the flask.
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- Volume A = 1 mL of the stock solution. So, for this example, to make a 10 ppm standard, add 1 mL of the 1000 ppm standard to a 100. mL volumetric flask. Add DI water to mark. Mix by inversion. Types of Dilutions: • Serial dilution --- All standards are made by diluting the previous standard.
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DETECTION AND IDENTIFICATION OF MICROORGANISMS Dacron, calcium alginate swabs with plastic shafts. are recommended for collection of bacteria, viruses, and mycoplasma fro mucosal or feces. calcium alginate swabs with Al shafts affect PCR amplification. swab extraction tube system (SETS) is designed for max recovery of microorganisms from swabs by centrifugation.
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- Supplies 1 empty 250 ml flask autoclave tape1 empty 16mm test tubes (red cap) TSB (clear cap)4 sterile petri plates 1 5 ml pipetagar (white cap) Procedure In this part of the lab exercise you will prepare and sterilize Tryptic Soy Broth (TSB) andsolid Tryptic Soy Agar (TSA) culture media.
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Guidelines for Safe Work Practices in Human and Animal Medical Diagnostic Laboratories Cool the mixture, transfer the contents to a 250 ml volumetric flask, rinse the beaker with 25. ml of water, adding the rinsings to the flask; bring to volume with water. and mix. Allow the mixture to stand for 10 minutes and filter the solution.
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Volumetric Flask Updated February 15, 2017. A volumetric flask is a piece of laboratory glassware that is used to prepare a chemical solution. It is used to make up a solution to a known volume. Volumetric flasks measure volumes much more precisely than beakers or Erlenmeyer flasks. A volumetric flask is characterized by having a bulb and a long neck.
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What are those 'triangular' shaped test tubes called? A flask is a piece of laboratory glassware designed to contain liquid chemicals of a volume greater than can be contained in a standard test tube. Flasks range in size from 50 ml all the way up to 1000 ml. Flasks with conical-shaped bottoms are properly called “Erlenmeyer flasks”.
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- CHEM 109 Introduction to Chemistry Revision 3.0 Laboratory Exercise: The Precision of Volume Measurements The accurate measurement of the volume of liquids tends to be difficult and chemists have a number of different types of devices for making this measurement; beakers, graduated cylinders, volumetric flasks, etc.
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Wash Bottles Wash Bottles. The Lab Depot provides a variety of lab wash bottles, perfect for rinsing out a variety of glass and plasticware. Our laboratory wash bottles are available in a variety of sizes and variations to meet each of your laboratory needs. We also provide a wide range of other plastic lab bottles for a variety of uses.
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- Procedure. 1  the two flasks should be about 25 cm apart on a small cart. 2  remove the stoppers from the flasks. 3  immediately invert the aquarium over the flasks.  a white cloud of begins to form over the flask containing HCl.
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- Techniques and Practice 3: Volumetric flask, pipette, preparation of a standard solution, serial. dilution and Graphing. Objectives. At the end of this lab, the student should be able to: 1. Recognize basic volumetric glassware and lab equipment and know how to select the. appropriate glassware for the tasks at hand.
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How Do I Securely Erase My Phone Before I Sell It? No matter what type of smartphone you use, there are a few basic things you should check outside of wiping your phone: 1  Remove your SIM card: While most of the data that you store is kept on your internal storage or micro SD card, it's still possible for contacts or call logs to be kept on your SIM card. To truly ensure that the data on your micro SD card is secure, keep it to yourself. 2  Erase and format your SD card: If you absolutely have to include your micro SD card with your phone, then you'll at least want to erase and format it. 3  You can usually do this via the Settings app.