PSL Rheotek Laboratory Precision Thermometer

F100 High Precision Thermometer F100 Digital Thermometer The PSL Rheotek - F100 precision thermometer is suitable for very accurate temperature measurement with high long term stability. The F100 is recommended to be used as a reference thermometer for all viscosity applications, as well as other liquid baths. The F100 consists of two models: - handset with one PT100 resistance probe - handset with two PT100 resistance probes. User functions include – display hold, display zero, one time measurement log, statistical analysis – min/max, average and standard deviation. A USB socket provides external communication to a PC for logging purposes. A Nickel-Metal Hydride (NI-MH) rechargeable battery is supplied with a charging socket built into the handset together with low battery indicator. F100/A/CAL-4T Calibration - to meet ASTM D445 accuracy requirements, a resistance calibration followed by a temperature calibration at key kinematic viscosity set-points is carried out on the combined handset and probe system. The F100 probes are 335mm long enabling a viscometer bath to be checked at different depths. The long probes also meet the minimum immersion depths required by viscosity test methods. ● Key features Large LCD display Robust handset Single or dual probes System calibration Re-chargeable battery F100/C High stability F100/B/CAL-4T ASTM D445 compliance www.psl-rheotek.com Poulten Selfe & Lee © 2014 F100 Specifications & Models F100 Specifications Temperature range (°C, °F) -50 to +250°C Resolution 0.001°C Stability < 0.005°C per year Test Method Compliance ASTM D445 (kinematic viscosity) System calibration accuracy 0.015°C or better Probe input 2 x DIN sockets with screw lock for PT100 Resistance probes Handset dimensions 232mm x 97mm x 53mm Weight 500g (1.1lbs) PT100 probe dimensions Length 350mm x OD 6mm The requirement in ASTM D445 for DCT (Digital Contact Thermometers) is for a minimum accuracy (uncertainly) of 0.02°C for display (indicator) and sensor combined. F100 Models F100/A/CAL-4T F100 handset and one PT100 probe – factory resistance calibration and temperature calibration at -20, 0, 40 and 100°C* F100/B/CAL-4T F100 handset and two PT100 probes – factory resistance calibration and temperature calibration at -20, 0, 40 and 100°C* F100/C F100 Carry case F100-BATT Replacement battery * Additional calibration points below Annual recalibration of the F100 handset and probe(s) is recommended. The as found re-calibration will take into account any drift that may have arisen whilst the F100 has been in use. Re-Calibration Fee Codes F100-RECAL Re-calibration of F100 with one PT100 probe at -20, 0, 40 and 100 °C F100-RECAL-2 Re-calibration of F100 with two PT100 probes at -20, 0, 40 and 100°C F100-RE-40 Additional calibration or re-calibration of F100 at -40°C (per PT100 probe) F100-RE-50 Additional calibration or re-calibration of F100 at +50°C (per PT100 probe) F100-RE-150 Additional calibration or re-calibration of F100 at +150°C (per PT100 probe) * Handsets and probes should be returned to the PSL Calibration Laboratory www.psl-rheotek.com Poulten Selfe & Lee © 2014 European Office: Tel.: +44 1621 787 100 North America office: Tel.: 574 271 9417 Poulten, Selfe & Lee Ltd Russell House Burnham Business Park Burnham-on-Crouch Essex CM0 8TE United Kingdom [email protected].

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Experiment 5: Molar Volume of a Gas (Mg + Hcl)
1 CHEM 30A EXPERIMENT 5: MOLAR VOLUME OF A GAS (MG + HCL) Learning Outcomes Upon completion of this lab, the student will be able to: 1) Demonstrate a single replacement reaction. 2) Calculate the molar volume of a gas at STP using experimental data. 3) Calculate the molar mass of a metal using experimental data. Introduction Metals that are above hydrogen in the activity series will displace hydrogen from an acid and produce hydrogen gas. Magnesium is an example of a metal that is more active than hydrogen in the activity series. The reaction between magnesium metal and aqueous hydrochloric acid is an example of a single replacement reaction (a type of redox reaction). The chemical equation for this reaction is shown below: Mg(s) + 2HCl(aq) è MgCl2(aq) + H2(g) Equation 1 When the reaction between the metal and the acid is conducted in a eudiometer, the volume of the hydrogen gas produced can be easily determined. In the experiment described below magnesium metal will be reacted with an excess of hydrochloric acid and the volume of hydrogen gas produced at the experimental conditions will be determined. According to Avogadro’s law, the volume of one mole of any gas at Standard Temperature and Pressure (STP = 273 K and 1 atm) is 22.4 L. Two important Gas Laws are required in order to convert the experimentally determined volume of hydrogen gas to that at STP. 1. Dalton’s law of partial pressures. 2. Combined gas law. Dalton’s Law of Partial Pressures According to Dalton’s law of partial pressures in a mixture of non-reacting gases, the total pressure exerted is equal to the sum of the partial pressures of the individual gases.
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Use of Laboratory Equipement
USE OF LABORATORY EQUIPEMENT C. Laboratory Thermometers Most thermometers are based upon the principle that liquids expand when heated. Most common thermometers use mercury or colored alcohol as the liquid. These thermometers are constructed as that a uniform-diameter capillary tube surmounts a liquid reservoir. To calibrate a thermometer, one defines two reference points, normally the freezing point of water (0°C, 32°F) and the boiling point of water (100°C, 212°F) at 1 tam of pressure (1 tam = 760 mm Hg). Once these points are marked on the capillary, its length is then subdivided into uniform divisions called degrees. There are 100° between these two points on the Celsius (°C, or centigrade) scale and 180° between those two points on the Fahrenheit (°F) scale. °F = 1.8 °C + 32 The Thermometer and Its Calibration This section describes the proper technique for checking the accuracy of your thermometer. These measurements will show how measured temperatures (read from thermometer) compare with true temperatures (the boiling and freezing points of water). The freezing point of water is 0°C; the boiling point depends upon atmospheric pressure but at sea level it is 100°C. Option 1: Place approximately 50 mL of ice in a 250-mL beaker and cover the ice with distilled water. Allow about 15 min for the mixture to come to equilibrium and then measure and record the temperature of the mixture. Theoretically, this temperature is 0°C. Option 2: Set up a 250-mL beaker on a wire gauze and iron ring. Fill the beaker about half full with distilled water.
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Ear and Forehead Thermometer
Ear and Forehead Thermometer INSTRUCTION MANUAL Item No. 91807 19.PJN174-14_GA-USA_HHD-Ohrthermometer_DSO364_28.07.14 Montag, 28. Juli 2014 14:37:38 USAD TABLE OF CONTENTS No. Topic Page 1.0 Definition of symbols 5 2.0 Application and functionality 6 2.1 Intended use 6 2.2 Field of application 7 3.0 Safety instructions 7 3.1 General safety instructions 7 3.3 Environment for which the DSO 364 device is not suited 9 3.4 Usage by children and adolescents 10 3.5 Information on the application of the device 10 4.0 Questions concerning body temperature 13 4.1 What is body temperature? 13 4.2 Advantages of measuring the body tempera- ture in the ear 14 4.3 Information on measuring the body tempera- ture in the ear 15 5.0 Scope of delivery / contents 16 6.0 Designation of device parts 17 7.0 LCD display 18 8.0 Basic functions 19 8.1 Commissioning of the device 19 8.2 Warning indicator if the body temperature is 21 too high 2 19.PJN174-14_GA-USA_HHD-Ohrthermometer_DSO364_28.07.14 Montag, 28. Juli 2014 14:37:38 TABLE OF CONTENTS USA No. Topic Page 8.3 Backlighting / torch function 21 8.4 Energy saving mode 22 8.5 Setting °Celsius / °Fahrenheit 22 9.0 Display / setting time and date 23 9.1 Display of time and date 23 9.2 Setting time and date 23 10.0 Memory mode 26 11.0 Measuring the temperature in the ear 28 12.0 Measuring the temperature on the forehead 30 13.0 Object temperature measurement 32 14.0 Disposal of the device 33 15.0 Battery change and information concerning batteries 33 16.0 Cleaning and care 36 17.0 “Cleaning” warning indicator 37 18.0 Calibration 38 19.0 Malfunctions 39 20.0 Technical specification 41 21.0 Warranty 44 3 19.PJN174-14_GA-USA_HHD-Ohrthermometer_DSO364_28.07.14 Montag, 28.
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Infrared Forehead Thermometer (4DET-306) Quick Start Guide
Infrared Forehead Thermometer (4DET-306) Quick Start Guide To take a forehead temperature: 1” (2-3cm) 1 Press the power button , wait for 2 beeps. 2 Aim the thermometer at the center of the forehead about 1 inch (2-3 cm) from the skin and press the start button S T A R T . 2 START If the body temperature is below 100°F (38.7°C) you will hear one short beep and a 1 happy face will appear on the display. If the body temperature is above 100°F (38.7°C) you will hear one long beep followed by three short beeps and a sad face will appear on the display. Detailed instructions are included in the packaging Temperature Taking Hints and Tips • All body site temperatures are not the same. The • Temporal artery temperature changes faster than a temperature taken at different sites on the body will vary temperature taken rectally, orally or under the arm. A significantly. A forehead (temporal) temperature, for difference of 1°F (.6°C) is normal. Body temperature can example, is usually 0.5°F (0.3°C) to 1.0°F (0.6°C) lower change throughout the day. than an oral temperature. • Consistently low temperature readings may be caused by a • Make certain the thermometer is in FOREHEAD MODE. dirty instrument window. Use an alcohol wipe or a cotton • Non-contact infrared thermometers measure surface swab moistened with alcohol (70% isopropyl) to clean the temperature. Hold the device approximately 1 inch (2-3 instrument window and housing. Gently wipe and let air dry.
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Model 914-604 Infra-Red Thermometer
Not recommended for use in measuring shiny or polished metal surfaces (stainless steel, aluminum, etc.) The reading will not be accurate. It is not possible to take measurements through transparent materials (glass, Plexiglas, etc.). It will Model 914-604 measure the temperature of the transparent surface Infra-red thermometer instead. It is not possible to measure air temperatures. Measurement errors can occur due to air contaminated with dust, steam, smoke, etc. Battery Replacement: Battery is low and no more measurements are possible. Replace the battery immediately with a CR2032 lithium button cell. 1- Power off the thermometer before replacing the battery A malfunction may occur if the power is on during battery replacement. If a malfunction occurs, restart the device. 2-Twist the battery cover on the back of thermometer to loosen the cover and remove the old battery. A coin will work well. 3- The new CR2032 battery is installed positive side up. Take care that the metal contacts at the top of the battery Congratulations on your purchase of the Infrared compartment are not bent. Thermometer! One-click for a temperature reading. Metal Contacts Metal Contacts No surface contact required, prevents contamination. Take a Measurement: 4-Replace the battery cover and tighten. Place the thermometer close to the item to measure. Click the button once to measure the surface temperature. The Troubleshooting: reading will display for 15 seconds. Problem Solution Hold the button for ongoing readings. No Display: Press the button Auto Shut Off: Ensure battery polarity is correct When the button has not been pressed for 15 seconds, the Change the battery thermometer will automatically shut off to save power.
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ELISA Technical Guide Table of contents Introduction ................................................................................................................3 ELISA technology ......................................................................................................4 ELISA components ....................................................................................................6 ELISA equipment .......................................................................................................7 Equipment maintenance and calibration ..................................................................8 Reagent handling and preparation ...........................................................................9 Test component handling and preparation .............................................................10 Quality control .........................................................................................................11 Sample handling ......................................................................................................12 Pipetting methods ...................................................................................................14 ELISA plate timing ...................................................................................................16 ELISA plate washing ................................................................................................17 Plate reading and data management ......................................................................19 ELISA
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WILKES-DISSERTATION-2018.Pdf (4.378Mb)
Chemostat and Modeling Investigations of Algal Photosynthetic Carbon Isotope Fractionation The Harvard community has made this article openly available. Please share how this access benefits you. Your story matters Citation Wilkes, Elise. 2018. Chemostat and Modeling Investigations of Algal Photosynthetic Carbon Isotope Fractionation. Doctoral dissertation, Harvard University, Graduate School of Arts & Sciences. Citable link http://nrs.harvard.edu/urn-3:HUL.InstRepos:41127152 Terms of Use This article was downloaded from Harvard University’s DASH repository, and is made available under the terms and conditions applicable to Other Posted Material, as set forth at http:// nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of- use#LAA Chemostat and Modeling Investigations of Algal Photosynthetic Carbon Isotope Fractionation A dissertation presented by Elise Wilkes to The Department of Earth and Planetary Sciences In partial fulfillment of the requirements for the degree of Doctor of Philosophy in the subject of Earth and Planetary Sciences Harvard University Cambridge, Massachusetts April, 2018 2018 – Elise Wilkes All rights reserved. Dissertation Adviser: Ann Pearson Elise Wilkes Chemostat and Modeling Investigations of Algal Photosynthetic Carbon Isotope Fractionation Abstract Marine eukaryotic phytoplankton produce organic matter that is depleted in 13C relative to ambient dissolved carbon dioxide. This photosynthetic carbon isotope fractionation (εP) is recorded in marine sediments and used to resolve changes in the global carbon cycle, including variations in atmospheric pCO2. These applications rely upon a coherent understanding of the environmental and physiological controls on P. While classical models for εP are based on the balance between diffusion of CO2 and its fixation into biomass by the enzyme RubisCO, the details of phytoplankton carbon dynamics in reality are more complex.
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