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International Seed Testing Association
International Seed Testing Association
Richtiarkade 18
8304 Wallisellen, CH
+41 44 838 60 00
International Seed Testing Association

ISTA Workshop on Tetrazolium Testing and Equilibrium Relative Humidity (eRH) Determination for Native Species

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Centro Nazionale Carabinieri Biodiversità and the ISTA Tetrazolium & Moisture Technical Committees invite you to a Workshop on Tetrazolium Testing and Equilibrium Relative Humidity (eRH) Determination for Native Species in Peri (VR), Italy.

Date 26.05.2023 - 27.05.2023
Location Peri
Country Italy


Registration for this Workshop will be opened soon.

Aim of the workshop: 

The workshop aim is detecting some quality parameters of native species (a flower, a herb, a tree, a shrub species) not already included in the ISTA Rules and it is focused on the needs of seed testing laboratories that would like to work according to the ISTA Methods, standardizing testing methods for determining viability of seeds and equilibrium relative humidity (eRH), a new test method, alternative to moisture content, for small seed lots or precious seeds.

The language will be English – no translation

The workshop is organised for teaching participants to work with hands on seeds!



Centro Nazionale Carabinieri Biodiversità

Via del Ponte 256

37020 Peri (VR) ITALY


Workshop Organiser

ISTA Secretariat     Andreea-Nicoleta Militaru

Local Organiser

Centro Nazionale Carabinieri Biodiversità                                                  

Sergio Pasquini
Phone: +39 045 628 40 71



Stefanie Krämer

ISTA Tetrazolium Committee Vice-Chair

ISTA Forest Tree and Shrub Seed Committee Member

ISTA Flower Seed Testing Committee Member

Fiona Hay

ISTA SST Chief Editor

ISTA Moisture Committee Member

Sergio Pasquini

ISTA Tetrazolium Committee Chair

ISTA Wild Species Working Group Member

Preliminary Programme:  


Friday, 26 May:

  • Working groups: set up of a Method Validation Test Plan to introduce a new species in ISTA Rules (1 species per group)
  • Principle of equilibrium Relative Humidity (water content) vs moisture content determination in native seeds tested (a flower, a herb, a tree, a shrub)
  • Preparation of samples for Tetrazolium test, eRH test and Moisture test.
  • Official dinner

Saturday, 27 May:

  • Evaluation of eRH, moisture content and tetrazolium test of  samples prepared during the Workshop activities.


Participation Fee: 

ISTA Members 350 EUR                            
ISTA Non-Members 500 EUR

The participation fee includes all literature and supporting material for the workshop, lunches and coffee breaks, workshop dinner.
It does not include accommodation or meals other than those specified.

Accompanying person at official dinner: 60 EUR


The number of participants is a minimum of 15 and restricted to a maximum of 20 participants. 

If you would like to attend the workshop please fill in the registration form. In case you select payment by invoice the invoice will be sent to you, which has to be paid before the participation confirmation will be generated. 

Registration and payment deadline is 20 April 2023

Please note:  
For cancellations made before 20 April 2023 registration fees are refundable less the 50 EUR administration fee.   
For cancellations made after 20 April 2023 registration fees are non-refundable. 

Recommended accommodation: 

Albergo Olivo

Address: via Don Cesare Scala, 35

37020 Rivalta di Brentino (Verona)

Phone: +39 045 7270039


Single room/night: 45 EUR

Double room/night: 55 EUR

Note: guests will be responsible for payment of their own room, taxes and incidentals.


For any additional information, please contact: 

Andreea-Nicoleta Militaru

A letter of invitation for obtaining Visa will be issued for the participants only after payment of the participation fee.

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