Laboratory Soil Physical Research

   
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Shear test apparatus
Eijkelkamp 08.68 Shear Test Apparatus

Product Features
 
  • Eijkelkamp 08.68 Shear Test Apparatus measures the shear stress of an undisturbed soil sample.
  • During the measurement soil water matrix, compression stress and vertical displacement are simultaneously measured.
  • The apparatus is operating computer controlled using multifunctional software for executing measurement protocols and visualised data presentation.
  • The samples are taken in a soil sample ring Ø 103 x 100 mm, height 30 mm, contents 235 cc






Pressure Plate Cell
Soil Moisture Pressure Plate Cell

Product Features
 
  • Soil Moisture Pressure Plate Cell used for soil water retention measurements and extractions
  • The widest selection of 0.5 bar to 15 bar
  • Reusable for years of cost effective service
  • Each plate tested for air entry and flow
  • Fits all pressure extractors and most competitive extractors






Air permeameter
Eijkelkamp 14.34 Air Permeameter

Product Features
 
  • Includes a standard air permeameter for connection to various chambers.
  • Measuring range of 0.003 - 3 cm/sec.
  • Has a built-in data logger and RS 232 output.
  • Eijkelkamp 14.34 Air Permeameter equipped with an electronic balance and a connection plug for a tensiometer and soil moisture sensor.
  • Supplied together with software and charger.
  • In the set 3 different chambers are included to measure homogeneous flow (with integrated pressure sensor) and heterogeneous flow in undisturbed soil (in 250 cc soil sample rings with diameter 84 mm).






Special Sampling Plate
Soil Moisture Special Sampling Plate

Product Features
  • Soil Moisture Special Sampling Plate the large scale (22-inch diameter) vacuum plate provides a tremendous amount of surface space to control suction or sampling on a big scale.
  • Samples or growing plants can be placed on one of these large plates and induce the matric suction required up to 1 bar of suction.
  • A complete, "system level" vacuum plate assembly, which is also extremely easy to use, and install.
  • Simply wet up the samples on the plate, tie into a vacuum reservoir and pull the suction level required - it couldn't be easier.
  • Comes with 5 removable legs and a hose connector on the bottom of the plate.






Surface shear test apparatus
Eijkelkamp 08.66 Surface Shear Test Apparatus

Product Features
 
  • Eijkelkamp 08.66 Surface Shear Test Apparatus soil stability is a decisive factor for erosion risk reduction.
  • Soil stability is determined by shear resistance or the angle of internal friction, depending on or varying through soil-water pressure and humus content.
  • Soil shear resistance will increase with increasing organic carbon content.
  • Air-dry soil state samples will result in the smallest resistance to shearing in comparison with the range of water content applied.
  • The effect of bulk density on soil shear strength depends on the water content and is distinct for a higher range of vertical loads.






Tempe Pressure Cells
Soil Moisture Tempe Pressure Cells

Product Features
 
  • Soil Moisture Tempe Pressure Cells to determine the water-holding characteristics of a soil sample in the 0 to 1 bar pressure range.
  • The cell accepts an undisturbed soil sample contained in a 2-1/4" (5.7 cm) or a 3-1/2" (8.8 cm) diameter cylinder.
  • Smaller cores may be placed inside the 2-1/4" or 3-1/2" diameter brass cylinder if desired.
  • Comes with top and bottom Plexiglass plates, a porous ceramic plate, a brass cylinder, and all sealing and connecting hardware.
  • A variety of porous ceramic plates and brass cylinders are available.
  • An external pressure source is connected to the Tempe cell using Neopreme tubing. 






Air pycnometer
Eijkelkamp 08.60 Air Pycnometer

Product Features
 
  • A complete set, including a calibration block.
  • Eijkelkamp 08.60 Air Pycnometer suited for sample rings with a maximum diameter of 53 or 60 mm (max. height 51 resp. 40 mm).
  • Measuring range of 0-115 cm3.
  • The time period of the measurement is approximately 1 minute.
  • The maximum measuring accuracy equals 1%
  • Applied in knowing the specific weight.
  • Temperature variations can be prevented by climate control in the laboratory.






Sandbox for pF-determination
Eijkelkamp 08.01 Sandbox For pF-Determination

Product Features
 
  • Eijkelkamp 08.01 Sandbox For pF-Determination the standard set for pF-determination pF 0 - 2.0 (0 - 0.1 bar) consists of the sandbox with control panel, suction levelling stand, water supply bottle with stand, filter cloth (140-150 micron), a number of containers synthetic sand, grain size approximately 73 micron and various accessories.
  • A maximum of 40 soil sample rings can be placed on the sandbox.
  • The samples that are measured are taken using soil sample rings (100cc).
  • A soil sample ring kit must be available as well as cases with soil sample rings and aluminum soil sample boxes.
  • A balance and a drying oven should also be equipped for the determination of the pF.
  • The table on which the instrument is placed should be level and isolated against vibration.
  • Before measuring of the moisture tension can commence the different parts must be mounted and the drain must be fitted with a filter cloth.
  • Subsequently the sandbox is filled in the proper manner with water and synthetic sand (the sand should not contain any air- or water pockets).
  • If everything has been executed in accordance with the operating instructions the saturated samples in the soil sample rings can be placed in the sandbox and the moisture tension is determined of the completely saturated sample.
  • Next subsequently larger suction is applied. Weighing the sample each time after the balance is set again yields the moisture content that goes with each moisture tension.
  • If the sandbox is inundated with water after each test it can remain in operation during several years. A copper ring prevents algal growth.






Sand/kaolin box for pF-determination
Eijkelkamp 08.02.SA Sand/Kaolin Box For pF-Determination

Product Features
 
  • The standard set for pF-determinations pF 2.0 - 2.7 (0.1 - 1 bar) consists of a sand/kaolin box with control panel, an electronical suction level control system (pressure range 0 - 600 hPa) with integrated control panel, pressure sensor and 10 l tank, containers with synthetic sand, a container with kaolin clay and various accessories.
  • Eijkelkamp 08.02.SA Sand/Kaolin Box For pF-Determination suitable for a maximum of 40 soil sample rings.
  • The pF-determinations are executed on samples in the soil sample rings (100 cc).
  • A soil sample ring kit must be available also as well as cases with soil sample rings and aluminium soil sample boxes.
  • A balance and a drying oven are part of the minimum equipment.
  • The laboratory table should be level and isolated against vibration.
  • Before the measuring of the pF can be started the various parts must be mounted and the drain must be fitted with a filter cloth.
  • Next the sand/kaolin box is filled in the proper manner with water, synthetic sand and kaolin clay (the sand/clay filling  should not contain any air or water pockets).
  • Excess drainage water is removed applying the automatic suction level control system.
  • The different suction on the samples is realized using the vacuum pump.
  • For the determination of the complete pF-range (0 - 2.7) the sand box and the sand/kaolin box can be applied in one single setup next to each other.
  • A filled box can be used for several years if it is inundated with water after each test.
  • A copper ring prevents algal growth.






Membrane apparatus for pF determination
Eijkelkamp 08.03 Membrane Apparatus For pF Determination

Product Features
 
  • Eijkelkamp 08.03 Membrane Apparatus For pF Determination for pF determination of samples in the range pF 3.0 - 4.2 (1.0 - 15.5 bar), samples cut in sample rings are not used.
  • In this setup the semi-disturbed sample is saturated before measurement in the laboratory and placed in a synthetic ring.
  • The complete set consists of a pressure membrane extractor suitable for a maximum of 15 samples, a 20 bar compressor including reducing valve and manometer, an air filter, cellophane membrane, filter cloth, synthetic soil sample retaining rings and various accessories.
  • A balance, a drying oven and aluminum soil sample boxes with lids should at least be fitted for the determination of pF.
  • After saturation of the sample, part of this sample is placed in a synthetic retaining ring and prepared further.
  • After closing of the pressure membrane extractor an overpressure is realized in the pressure membrane extractor using the compressor.
  • On reaching the equilibrium the samples are removed, weighed, dried and weighed again.
  • In order to be able to measure a larger series of samples a second pressure membrane extractor can be connected to the first extractor.