β-Hch Solution - Beta-hexachlorocyclohexane 100g/ml In Methanol, Analytical Standard 99% Purity, Laboratory Grade

4,4-DDE Solution - 200g/mL In Isooctane, Analytical Standard, ≥98% Purity, Colorless To Light Yellow Liquid

4,4-DDD - Dichlorodiphenyldichloroethane Solid, White Crystalline Powder | Analytical Standard, Technical Grade, Persistent Organic Pollutant

Density Standard (40 °C) - Analytical Grade Water and Calibration Salts, Stable Clear Liquid

Multicomponent Cation IC Standard in H2O - 100mL, 12 Month Expiry | Analytical Grade, 99.9% Purity, Clear Liquid

1 -(1,3-Benzothiazol-2-yl)ethanol

Clay (F) - Versatile Phyllosilicate Powder, White Beige Gray | Plasticity When Wet, High Thermal Stability, Insoluble in Water

Human Serum (Cortisol Unspiked) - Pale Yellow Liquid, pH 7.4, Biological Matrix for Cortisol Analysis

1-Allyl-3-Methyl-1H-Pyrazole-4-Carbaldehyde 95% - Yellow to Light Brown Liquid, Industrial Grade, High Chemical Reactivity for Synthesis

3-Allyl-4-Isopropoxybenzaldehyde 95% - C13H16O2 Liquid, Aromatic Intermediate for Fragrance and Flavor Synthesis

Ald-ph-peg2-t-butyl Ester - Polyethylene Glycol Derivative, White Crystalline Powder, 216.28 g/mol, >98% Purity