GB2147998B - Indicator device - Google Patents

Indicator device

Info

Publication number
GB2147998B
GB2147998B GB08327421A GB8327421A GB2147998B GB 2147998 B GB2147998 B GB 2147998B GB 08327421 A GB08327421 A GB 08327421A GB 8327421 A GB8327421 A GB 8327421A GB 2147998 B GB2147998 B GB 2147998B
Authority
GB
United Kingdom
Prior art keywords
indicator device
indicator
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
GB08327421A
Other versions
GB2147998A (en
GB8327421D0 (en
Inventor
Colin Thomas Billiet
Robert Michael Fielding
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.)
Domnick Hunter Ltd
Original Assignee
Domnick Hunter Filters 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 Domnick Hunter Filters Ltd filed Critical Domnick Hunter Filters Ltd
Priority to GB08327421A priority Critical patent/GB2147998B/en
Publication of GB8327421D0 publication Critical patent/GB8327421D0/en
Publication of GB2147998A publication Critical patent/GB2147998A/en
Application granted granted Critical
Publication of GB2147998B publication Critical patent/GB2147998B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2226—Sampling from a closed space, e.g. food package, head space
    • G01N2001/2238—Sampling from a closed space, e.g. food package, head space the gas being compressed or pressurized

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)
GB08327421A 1983-10-13 1983-10-13 Indicator device Expired GB2147998B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08327421A GB2147998B (en) 1983-10-13 1983-10-13 Indicator device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08327421A GB2147998B (en) 1983-10-13 1983-10-13 Indicator device

Publications (3)

Publication Number Publication Date
GB8327421D0 GB8327421D0 (en) 1983-11-16
GB2147998A GB2147998A (en) 1985-05-22
GB2147998B true GB2147998B (en) 1986-11-05

Family

ID=10550126

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08327421A Expired GB2147998B (en) 1983-10-13 1983-10-13 Indicator device

Country Status (1)

Country Link
GB (1) GB2147998B (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1332900A (en) * 1969-12-06 1973-10-10 Domnick Hunter Eng Filter cartridge for fluids
GB1357613A (en) * 1971-06-08 1974-06-26 Johnson Service Co Gas quality indicator and method for determining gas quality

Also Published As

Publication number Publication date
GB2147998A (en) 1985-05-22
GB8327421D0 (en) 1983-11-16

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20021013