Search for
in
-->
westernag.ca
Google Scholar
PRS™-PROBE FREQUENTLY ASKED QUESTIONS
Topics:
General
/
Technical
/
Logistical
/
Ordering
/
Past Research
General
What are PRS™-probes?
Describes the concept of bioavailable nutrients
PRS™-Probe Specifications
What do the PRS™-probes measure?
General description of PRS™-probes and how they work
Maximum ion capacities for the PRS membrane
Unit of measure for PRS™-probes:
Nutrient Supply Rates
How do the PRS™-probes work?
Donnan exchange principle
PRS™-probe animation demonstrating ion exchange
Membrane composition
How are the PRS™-probes used?
How our service works
Types of burial methods
How are the PRS™-probes analysed?
PRS™-probe protocol
PRS™-probe contamination and method blanks
Washing PRS™-probes
Eluting PRS™-probes
Analyzing eluate
What makes the PRS™-probe a desirable research tool?
How do nutrient supply rates compare to conventional nutrient extractions (i.e., ppm)?
Does the PRS™-probe simulate biological availability as verified by correlations with plant uptake?
Why does ion activity need to be accounted for when measuring soil nutrient bioavailability?
PRS™-probe nutrient supply rates reflect the nutrient bioavailability to plants as compared to chemical extraction
Importance of measuring ion activity instead of total extractable ions
How do the PRS™-probes differ from ion-exchange resin beads in mesh bags?
Minimal soil disturbance
Direct contact exchange
Similar mechanism to plant roots
Reusable
What is the benefit of using PRS™-probes compared with simply buying raw ion-exchange membrane?
PRS™-probe are easier to use
Raw membrane is not meant for scientific purposes
All ion-exchange membranes are not created equal
What led to the development of the PRS™-probe technology?
Technical
What are the PRS™-probe specifications?
Dimensions of the PRS™-probe
Membrane description
Maximum ion capacities
Cl- and Na+ ion analysis requires advance notice
Why are Na
+
and HCO
3
-
used as counter-ions on the cation- and anion-exchange PRS™-probes, respectively?
Appropriate counter-ions depends on research objective
Na+ and HCO3- are the counter-ions used on PRS™-probes
What level of precision do the PRS™-probes have?
The Coefficient of Variation for PRS™-probe supply rates
How long can the PRS™-probes be buried?
Short term vs. Long term burial types
Cumulative nutrient supply rates
Consecutive burials vs. Discrete burials
What are the limitations of the PRS™-probe?
Are the PRS™-probe data publishable?
Yes!
Where have been PRS™-probes journal articles published
Map of locations in which PRS™-probes have been used
Logistical
How many PRS™-probes are required to complete a study?
Number of probes needed per experimental unit
Description of PRS™-probe pairs
What a sample is composed of
What are some important considerations when using PRS™-probes
in situ?
Soil contact
How to install PRS probes in soil
Soil temperature
Soil moisture
Competing Sinks
Burial length
Are there soil type concerns when using PRS™-probes?
Heavy vs. Light Textured soils
Are the PRS™-probes susceptible to insect or animal damage?
Will a nutrient (i.e., NO
3
-
) pulse through the soil displace an adsorbed nutrient (i.e., PO
4
2-
) on the PRS™-probe through mass action displacement?
How should method blanks be handled?
Procedure
Testing
Ordering
What is the cost and how are the PRS™-probes acquired?
Non-Collaborative and Collaborative Research Agreements
Acquisition from Canada and United States
Why are we interested in your PRS™-probe-related data?
Highlighting data for promotional purposes: Booth, presentations, Technical Updates
Why are the PRS™-probes strictly leased?
Ensures high quality data
What is included with a PRS™-probe order?
Customer Service and information materials describing PRS™ installation, washing, shipping and data interpretation
How are the PRS™-probes shipped?
Shipping methods and instructions
To the Researcher
To Western Ag Innovations
Canada
United States
Past Research
Where have the PRS™-probes been used?
In what types of research have the PRS™-probes been used?
Topics:
General
/
Technical
/
Logistical
/
Ordering
/
Past Research
© 2007 Western Ag Innovations Inc. All rights reserved.
Privacy Policy.
