GB2258729B - Drift indicator - Google Patents

Drift indicator

Info

Publication number
GB2258729B
GB2258729B GB9217162A GB9217162A GB2258729B GB 2258729 B GB2258729 B GB 2258729B GB 9217162 A GB9217162 A GB 9217162A GB 9217162 A GB9217162 A GB 9217162A GB 2258729 B GB2258729 B GB 2258729B
Authority
GB
United Kingdom
Prior art keywords
drift indicator
drift
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 - Fee Related
Application number
GB9217162A
Other versions
GB9217162D0 (en
GB2258729A (en
Inventor
Albert Frederick Wigley
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB9217162D0 publication Critical patent/GB9217162D0/en
Publication of GB2258729A publication Critical patent/GB2258729A/en
Application granted granted Critical
Publication of GB2258729B publication Critical patent/GB2258729B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/06—Investigating concentration of particle suspensions
    • G01N15/0606—Investigating concentration of particle suspensions by collecting particles on a support
    • G01N15/0637—Moving support
    • G01N15/0643—Moving support of the filter type
    • 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
    • G01N1/2273—Atmospheric sampling
    • 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
    • G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
    • G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/06—Investigating concentration of particle suspensions
    • G01N15/0606—Investigating concentration of particle suspensions by collecting particles on a support
    • G01N15/0618—Investigating concentration of particle suspensions by collecting particles on a support of the filter type
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N2015/0023—Investigating dispersion of liquids
    • G01N2015/0026—Investigating dispersion of liquids in gas, e.g. fog

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Molecular Biology (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
GB9217162A 1991-08-15 1992-08-13 Drift indicator Expired - Fee Related GB2258729B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB919117624A GB9117624D0 (en) 1991-08-15 1991-08-15 Drift indicator

Publications (3)

Publication Number Publication Date
GB9217162D0 GB9217162D0 (en) 1992-09-23
GB2258729A GB2258729A (en) 1993-02-17
GB2258729B true GB2258729B (en) 1994-11-23

Family

ID=10700023

Family Applications (2)

Application Number Title Priority Date Filing Date
GB919117624A Pending GB9117624D0 (en) 1991-08-15 1991-08-15 Drift indicator
GB9217162A Expired - Fee Related GB2258729B (en) 1991-08-15 1992-08-13 Drift indicator

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB919117624A Pending GB9117624D0 (en) 1991-08-15 1991-08-15 Drift indicator

Country Status (1)

Country Link
GB (2) GB9117624D0 (en)

Also Published As

Publication number Publication date
GB9117624D0 (en) 1991-10-02
GB9217162D0 (en) 1992-09-23
GB2258729A (en) 1993-02-17

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Legal Events

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

Effective date: 19960813