-Horizontal laminar flow cabinet (ISO5; equivalent to class 100)
-Polarized-light stereomicroscope (under the laminar-flow cabinet)
-Cold light source (under the laminar-flow cabinet)
-pH meter, calibrated between 4 and 10
-Low lint wipes (Kimberly-Clark Kimtech Science Delicate Task Wipes, 15402680)
-Beaker (2L) for storage of HNO3 solution.
-Low-retention tips (1 mL)
-Two PTFE beakers with cover (2 L)
-Standard Carbon Adhesive Tabs, Extra Pure, Diameter: 12mm (Science Services, MN77825-12)
-Pasteur pipettes (150 mm)
-Glass salt dips (2 mL capacity) and lids
-Dust particles should be avoided as possible. For this purpose, it is recommended to place an adhesive mat (BioClean SupaTac White STW, 15278318) at the doorstep of the lab where digestion will be performed
-Dedicated chemical waste container
-Suprapur® hydrogen peroxide (H2O2) 30% (Merck KGaA: 107298)
-Primar Plus – Trace analysis grade nitric acid (HNO3) (>68%) (Fisher Chemicals, 10098862)
-sodium hydroxide (NaOH) 0.5 M (15604900)