GB1175967A - Improvements in and relating to the control of chemical processes. - Google Patents

Improvements in and relating to the control of chemical processes.

Info

Publication number
GB1175967A
GB1175967A GB918768A GB918768A GB1175967A GB 1175967 A GB1175967 A GB 1175967A GB 918768 A GB918768 A GB 918768A GB 918768 A GB918768 A GB 918768A GB 1175967 A GB1175967 A GB 1175967A
Authority
GB
United Kingdom
Prior art keywords
light
mixing chamber
barium
amount
cell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB918768A
Inventor
Wilfred Charles Hamshere
Thomas William Lancas Atkinson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marchon Products Ltd
Original Assignee
Marchon Products Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Marchon Products Ltd filed Critical Marchon Products Ltd
Priority to GB918768A priority Critical patent/GB1175967A/en
Publication of GB1175967A publication Critical patent/GB1175967A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/0012—Galenical forms characterised by the site of application
    • A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N21/82—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a precipitate or turbidity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
    • G01N31/02—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using precipitation

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Pathology (AREA)
  • Dermatology (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Molecular Biology (AREA)
  • Plasma & Fusion (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

1,175,967. Photo-electric turbidometers. MARCHON PRODUCTS Ltd. Oct. 9, 1967 [Oct. 14, 1966], No.9187/68. Divided out of 1,175, 966. Heading G1A. The sulphate ion concentration of a solution is determined by passing the solution, free from suspended solids, together with a solution containing barium ions into a mixing chamber designed to inhibit the adherence of barium sulphate, passing the mixed solutions to a turbidimetric cell, illuminating the mixture in the turbidimetric cell and measuring the ratio of the amount of light transmitted through the mixture to the amount of light scattered therefrom. A metered quantity of a sample extracted from a wet process phosphoric acid reactor by the method disclosed in Specification 1,175, 966 is diluted with a measured quantity of water and mixed with a measured quantity of barium chloride in a mixing chamber. The mixing chamber is made of P. T. F. E. or provided with ultrasonic vibration to prevent adherence of barium sulphate. The amount of barium sulphate precipitated is measured in a turbidometer in which light is alternately passed along paths at 90 degrees to one another and a photo-cell measures the ratio of the transmitted to scattered light. The light beams may be derived from a common source and may be modulated by a rotating chopper.
GB918768A 1967-10-09 1967-10-09 Improvements in and relating to the control of chemical processes. Expired GB1175967A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB918768A GB1175967A (en) 1967-10-09 1967-10-09 Improvements in and relating to the control of chemical processes.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB918768A GB1175967A (en) 1967-10-09 1967-10-09 Improvements in and relating to the control of chemical processes.

Publications (1)

Publication Number Publication Date
GB1175967A true GB1175967A (en) 1970-01-01

Family

ID=9867086

Family Applications (1)

Application Number Title Priority Date Filing Date
GB918768A Expired GB1175967A (en) 1967-10-09 1967-10-09 Improvements in and relating to the control of chemical processes.

Country Status (1)

Country Link
GB (1) GB1175967A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1034253C2 (en) * 2007-03-16 2008-09-17 Stichting Wetsus Ct Of Excelle Method, device and system for measuring and / or treating contaminating components dissolved in a liquid.
WO2015036680A1 (en) * 2013-09-16 2015-03-19 Institut Francais De Rechercher Pour L'exploitation De La Mer - Ifremer Method and device for analysing sulfates in a liquid
DE102017200310B3 (en) * 2017-01-10 2017-11-02 Axagarius Gmbh & Co. Kg Test to determine the sulfate concentration

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1034253C2 (en) * 2007-03-16 2008-09-17 Stichting Wetsus Ct Of Excelle Method, device and system for measuring and / or treating contaminating components dissolved in a liquid.
WO2008115049A1 (en) 2007-03-16 2008-09-25 Stichting Wetsus Centre Of Excellence Of Sustainable Water Technology Method, installation and system for measuring and/or treating contaminating compounds dissolved in a liquid
WO2015036680A1 (en) * 2013-09-16 2015-03-19 Institut Francais De Rechercher Pour L'exploitation De La Mer - Ifremer Method and device for analysing sulfates in a liquid
FR3010791A1 (en) * 2013-09-16 2015-03-20 Ifremer METHOD AND DEVICE FOR ANALYZING SULFATES IN A LIQUID
DE102017200310B3 (en) * 2017-01-10 2017-11-02 Axagarius Gmbh & Co. Kg Test to determine the sulfate concentration

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