In-situ soil nitrate ion concentration sensor

A Tuli, JW Hopmans, T Kamai, BD Shaw - US Patent 8,444,937, 2013‏ - Google Patents
(57) ABSTRACT A method and apparatus for near real-time in-situ soil solu tion
measurements is presented. An outer sleeve is placed in soil Where ionic concentrations of …

Underwater vehicle and sensor

DG Thomas, CJ Kalli, ER Stine - US Patent 9,404,906, 2016‏ - Google Patents
Described herein is an underwater vehicle having a vehicle body with a buoyancy controller
adapted to vary the buoy ancy of the vehicle in order to control motion of the vehicle through …

Transfer line for sampling probe

M Van Straaten, W Van De Putte… - US Patent …, 2015‏ - Google Patents
Methods of sampling Substances such as Subsurface contami nants, a transfer line for use
in a system for such sampling, a sampling system and methods of manufacture and use of …

Gas membrane sampling device and gas sensor device for geological investigations

M Zimmer - US Patent 7,523,680, 2009‏ - Google Patents
US7523680B2 - Gas membrane sampling device and gas sensor device for geological
investigations - Google Patents US7523680B2 - Gas membrane sampling device and gas …

Tubular membrane gas and volatile compounds sampler for fluid introduction at atmospheric to high pressure

GM McMurtry, DN Kokubun - US Patent App. 13/999,653, 2014‏ - Google Patents
(57) ABSTRACT A high-transmittance sampler of dissolved gases and volatile organic
compounds (VOC) is described that is based upon a thin polymer membrane with tubular …

Subsurface environment sampler with actuator movable collection chamber

E Barnhart, R Hyatt, M Fields… - US Patent 10,704,993, 2020‏ - Google Patents
A Sampler and process for collecting, growing, inoculating and evaluating microbes in-situ.
The Sampler may be loaded with an active or inert media to assist with the collection of …

Devices and methods for determination of bioavailability of pollutants

RU Halden, IB Roll - US Patent 9,683,921, 2017‏ - Google Patents
Contaminant mass collection in Saturated sedimentary envi ronments for bioavailability
determination. A casing includes a screen between the environment that is subject to …

Sheet-form membrane sample probe, method and apparatus for fluid concentration analysis

AD Brumboiu, DA Norquay, B William - US Patent 7,658,094, 2010‏ - Google Patents
(57) ABSTRACT A sheet form membrane probe, an apparatus and method, wherein the
probe includes a probe body, a sheet-form mem brane secured to the probe body and …

Well system with attached sealant line

LI Robinson, ER Piatt - US Patent 11,098,555, 2021‏ - Google Patents
(57) ABSTRACT A device and method for collecting sample fluids from an underground
source which includes sample wells terminat ing in a corrugated conduit and sieve. The …

High pressure membrane introduction for a mass spectrometer

G McMurtry, D Copson - US Patent 7,385,191, 2008‏ - Google Patents
(57) ABSTRACT A membrane-introduction mass spectrometer (MIMS) device has a sample
inlet assembly provided with a mem brane held by an outer retaining ring across the …