The micropaleontology preparation laboratory is part of the climate thematic team at CEREGE. This platform brings together researchers who use bio-indicators present in oceanic and continental sedimentary archives to reconstruct the evolution of environmental parameters on different time scales.
Extraction protocols are adapted according to the nature (carbonated, siliceous, organic) of the bio-indicators and the degree of purity required for subsequent analyses.
The micropaleontology laboratory dedicated to calcareous and siliceous bioindicators occupies an area of 48 m2 + 2 annexes of 15 m2.
It offers 10 work stations including 6 under fume hoods.
5 fume hoods (150 x 90 cm)
1 laminair flow hood
1 ventilated cupboard for chemical storage 500 L
1 tentacular hood
2 precision balances (Sartorius, Metler)
1 ultra micro balance (Metler)
1 oven (Thermolyne, 1000°C)
1 centrifuge (Sigma, rotors 6 holders)
1 centrifugeuse (VWR, rotors 6 holders)
1 micro-centrifuge (Eppendorf)
1 rotating agitator (GFL 3040, 16 échantillons)
1 horizontal agitator (GFL, 20 échantillons)
3 ultrasonic baths
1 vegetation grinder
1 laminar flow particle separator (PostNova) + 4 peristaltic pumps (Ismantec & Heidolf)
Magnetic stirrer plates (18 postes)
2 sand hotplates (20x30 cm)
3 multiprobes (VWT, temp, ph, cond, potentiel redox, dissolved O2)
1 digital label machine (Dymo)
1 MilliQ water system
1 reverse osmosis water purification system
The palynology laboratory occupies a surface area of 40 m2 with 6 work stations two of which are under fume hoods.
2 fume hoods (150 x 90 cm)
2 centrifuges (Sigma, rotors 6 holders)
2 hot plates (20X30 cm)
1 fume hood with strong ventilation for hydrofloric acid storage
(1) a series of selective chemical extractions consisting of removing constituents that may interfere with observation or analysis.
(2) by sieving and/or filtration.
The residue obtained after extraction is then:
Obtaining high-purity concentrates is a prerequisite for geochemical analyses of certain bio-indicators (foraminifera, diatoms and phytoliths). For this purpose, the chemical extraction steps are multiplied and diversified at controlled temperatures. A physical separation phase by SPLITT (continuous aqueous laminar flow particle separator) may be necessary. The purity of the concentrates is checked by SEM-EDS.
Prices on request
Phytoliths - contact email@example.com
Diatoms - contact firstname.lastname@example.org
Coccolithophores - contact email@example.com
Prices on request