GB1349738A - Device for the determination of the surface area of powders - Google Patents

Device for the determination of the surface area of powders

Info

Publication number
GB1349738A
GB1349738A GB1349738DA GB1349738A GB 1349738 A GB1349738 A GB 1349738A GB 1349738D A GB1349738D A GB 1349738DA GB 1349738 A GB1349738 A GB 1349738A
Authority
GB
United Kingdom
Prior art keywords
valves
mercury
surface area
manometer
under pressure
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
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 GB1349738A publication Critical patent/GB1349738A/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
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • G01N15/088—Investigating volume, surface area, size or distribution of pores; Porosimetry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
    • G01N7/10—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing diffusion of components through a porous wall and measuring a pressure or volume difference

Abstract

1349738 Measuring surfaces of powders T ALLEN 19 April 1971 [20 March 1970] 13679/70 Heading G1S The surface area of a powder is determined by inserting a plug of powdered material into a tubular vessel which is connected at one end via valves T 1 , T 2 , T 3 , T 4 and T 5 to a mercury manometer 13, a reservoir 14, an inlet 15 for gas under pressure, a vacuum gauge 12 and a vacuum pump, evacuating the apparatus with all valves open except for T 4 , then after allowing gas under pressure into the apparatus with only valves T 4 and T 5 open, measuring the rate of change of mercury level in the manometer with only valves T 2 and T 5 open. The rate of change of mercury level may be measured by a plurality of digital timers 16 having actuating contacts extending into the path of travel of the mercury in the manometer 13. Dry air or helium may be the gas under pressure utilized in the determination of the surface area.
GB1349738D 1970-03-20 1970-03-20 Device for the determination of the surface area of powders Expired GB1349738A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1367970 1970-03-20

Publications (1)

Publication Number Publication Date
GB1349738A true GB1349738A (en) 1974-04-10

Family

ID=10027442

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1349738D Expired GB1349738A (en) 1970-03-20 1970-03-20 Device for the determination of the surface area of powders

Country Status (1)

Country Link
GB (1) GB1349738A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2127561A (en) * 1982-09-23 1984-04-11 Secr Defence Method and apparatus for investigating fibre surfaces
GB2127559A (en) * 1982-09-29 1984-04-11 Core Lab Inc Method and apparatus for nonsteady state testing of permeability
US4537063A (en) * 1984-05-17 1985-08-27 Core Laboratories, Inc. Nonsteady-state core holder
US4972730A (en) * 1989-03-16 1990-11-27 Micromeritics Instrument Corporation System for dosing and determining saturation pressure in a volumetric sorption analyzer
US5109714A (en) * 1989-09-21 1992-05-05 Iowa State University Research Foundation Method and means for dynamic measurement of rates of adsorption from solutions

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2127561A (en) * 1982-09-23 1984-04-11 Secr Defence Method and apparatus for investigating fibre surfaces
GB2127559A (en) * 1982-09-29 1984-04-11 Core Lab Inc Method and apparatus for nonsteady state testing of permeability
US4555934A (en) * 1982-09-29 1985-12-03 Core Laboratories, Inc. Method and apparatus for nonsteady state testing of permeability
US4537063A (en) * 1984-05-17 1985-08-27 Core Laboratories, Inc. Nonsteady-state core holder
US4972730A (en) * 1989-03-16 1990-11-27 Micromeritics Instrument Corporation System for dosing and determining saturation pressure in a volumetric sorption analyzer
US5109714A (en) * 1989-09-21 1992-05-05 Iowa State University Research Foundation Method and means for dynamic measurement of rates of adsorption from solutions

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Legal Events

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