The SPE20 contains a specialized membrane specifically designed for tough applications such as sampling heavy metals and where porous ceramics are inappropriate.
Applications
· For detection of herbicide, pesticide, and heavy metals
Benefits
· Only materials with sample contact are nylon and polyethylene
· Low sorption
Limits
· Bubble point is 100 kPa, but the porous PE cover allows water to flow only up to 20 kPa
Specifications
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SHAFT
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Ø 2 cm; Acrylic
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POROUS CERAMIC
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Ø 2 cm; length 6 cm
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BUBBLE POINT
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-100 kPa (only allows water flow up to -20 kPa)
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SUCTION TUBE
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PE; Ø 0.16 cm x Ø 0.28 cm
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PROTECTIVE TUBE
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PVC, Ø 1.1 cm
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ACHIEVABLE SAMPLE AMOUNTS
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Maximum: in free water and with a vacuum of -50 kPa approximately 5 mL per 10 minutes.
Minimum: in sandy loam soil with a vacuum of -50 kPa approximately 5 mL per hour.
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PORE WATER SAMPLER
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SK20/SKS20 (Internal Shaft Storage)
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SIC20/SICS20 (Internal Shaft Storage)
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SPE20/SPES20 (Internal Shaft Storage)
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SUCTION CUP MATERIAL
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Aluminum Oxide Ceramic
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Silicon Carbide
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Porous PE-Nylon Cup
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CHEMICAL SUITABILITY
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o Anions ( Nitrate, Sulphate, Phosphate, Chloride)
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Suitable
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Suitable
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Suitable
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o Cations (Calcium, Potassium, Sodium Ammonium)
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Limited Suitability
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Suitable
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Suitable after conditioning and sufficient forerun for flushing.
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o Metals (Aluminum, Copper, Chromium, Iron, Magnesia, Nickel)
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Not Suitable
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Suitable
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Suitable
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o Heavy Metals (Cadmium, Lead)
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Not Suitable
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Limited Suitability
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Suitable
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*See Chemical Suitability Chart for more information on chemical suitability.
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BUBBLE POINT
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100 kPa
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90 kPa
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100 kPa (PE cover only allows water flow up to 20 kPa)
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