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Circulators – Grant

CIRCULATORS

  • Refrigerated Circulators – Grant LTD series

    Compact circulators with stainless reservoir tank and integral refrigeration unit utilising ozone-friendly R134A refrigerant. Immersed parts are manufactured from stainless steel and Ryton fire-retardant plastic, with nickel-plated copper cooling coil.The control unit has a liquid crystal display, desired temperature being set by pushing in the control knob and turning until the required temperature is displayed. When the knob is released the actual bath temperature is displayed. Low liquid level protection and adjustable high and low temperature protection devices are fitted.

    Circulators are supplied complete with a flat stainless steel lid with plastic handle.

    Specification

       Model                       LTD6G               LTD20G
      
      Temp range                   -20 to +100         -30 to +100
      Display resolution           +/-0.1              +/-0.1
      Sensitivity                  +/-0.02             0.02
      Stability                    +/-0.015            0.02
      Uniformity                   +/-0.02             0.05
      Cooling capacity W           140                 560
      Pump max flow ltr/min        8.5                 8.5
      Pump max head m              1.7                 1.7
      Tank volume liters           6                   20
      Top opening lxh mm           120x145             200x290
      Dimensions lxwxh mm          395x225x505         470x390x630
      Weight Kg                    24                  50
      Heater load kW               1.4                 1.4
      Electrical requirements      240v 50hz 1.8kW     240v 50hz 2.1kW

    Ordering Information
    C29-180 – Refrigerated circulator Grant model LTD6G – £1629.00
    C29-190 – Refrigerated circulator Grant model LTD20G – £2535.00

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    For more inrofmation please visit http://www.jepbol.com/sect1/circ.html

    Be the first to comment - What do you think?  Posted by admin - August 25, 2010 at 4:57 am

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    Phosphate Sodium buffer Chart

    Phosphate (Sodium) buffer Chart
    Stock solution A

    2 M monobasic sodium phosphate, monohydrate (276g/L)

    Stock solution B

    2 M dibasic sodium phosphate (284 g/L).

    Mixing an appropriate volume (ml) of A and B as shown in the table below and diluting to a total volume of 200 ml, a 1 M phosphate buffer of the required pH at room temperature.

    A B pH

    92.0 8.0 0.8

    90.0 10.0 5.9

    87.7 12.3 6.0

    85.5 15.0 6.1

    81.5 19.5 6.2

    77.5 22.5 6.3

    73.5 26.5 6.4

    68.5 31.5 6.5

    62.5 37.5 6.6

    56.5 43.5 6.7

    51.0 49.0 6.8

    45.0 55.0 6.9

    39.0 61.0 7.0

    33.0 67.0 7.1

    28.0 72.0 7.2

    23.0 77.0 7.3

    19.0 81.0 7.4

    16.0 84.0 7.5

    13.0 87.0 7.6

    10.5 89.5 7.7

    8.5 91.5 7.8

    Web source: http://wheat.pw.usda.gov/~lazo/methods/lazo/phosphat.html

    Be the first to comment - What do you think?  Posted by admin - July 12, 2010 at 11:20 pm

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    Online Lectures on Bioinformatics

    # Biological preliminaries

    * Introduction

    * References

    * Exercises

    o Answers

    # Analysis of individual sequences

    * Introduction

    * Helical wheels, amphipatic helices and coiled-coils

    * References

    * Exercises

    # Pairwise sequence comparison

    * Introduction

    * Dot plots

    * Sequence Alignment

    * References

    * Exercises

    o Answers

    # Algorithms for the comparison of two sequences

    * Introduction: Type I and type II alignments

    * Type I alignment

    * Type II alignment

    * General gap functions for type II alignments

    * Minimum distance alignments

    * Minimum distance alignment score as a metric on sequences

    * References

    # Suboptimal Alignments

    * Introduction

    * Suboptimal points

    * Suboptimal Alignments

    * Stability

    * Application

    * References

    # Variants of the dynamic programming algorithm

    * Introduction

    * Free end-gaps

    * Local Alignments

    * Suboptimal Alignments

    * Similarity and Distance

    * Parametric Alignments

    * Linear in Space Algorithm

    # Practical Sections on Pairwise Alignments

    * Alignment Applet

    * Alignment Quiz

    # Multiple sequence alignment

    * Introduction

    * References

    * Exercises

    # Algorithms for SP-optimal multiple alignments

    * Definition

    * Motivation

    * Score functions

    * Problem

    * The exact solution

    * Saving space

    * Affine gap-costs

    * Reduction of search space

    * Divide-and-Conquer Alignment

    * References

    # Phylogenetic Trees and Multiple Alignments

    * Evolution

    * Ultrametric Trees

    * Iterative alignment strategy

    * Additive trees

    * Reconstruction of additive trees

    * Approximating additive metrics

    * Heuristics

    * Character-based methods for Phylogeny Construction

    * Parsimony

    # Protein Structure

    * Introduction

    * Different Levels of Protein Structure

    * Prediction Methods

    * Secondary Structure Prediction

    * Comparative Modelling

    * References

    * Related Links

    * Exercises

    via Online Lectures on Bioinformatics.

    Be the first to comment - What do you think?  Posted by admin - April 25, 2010 at 6:56 am

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