重庆博蓝鹰生物技术有限公司 Manuals

Chongqing Boliangying Ampholytic-Magnetic-Submicron-Particles Ion Exchange Magnetic Beads Product Data Sheet

The Ampholytic‑Magnetic‑Submicron‑Particles (MSP‑ZEW series) are sub‑micron magnetic beads (≈0.60 µm in vacuum, ≈1.0 µm in water) coated with a neutral polymer that encapsulates an Fe₃O₄ core. Their surface carries both positive and negative ionizable groups, allowing electrostatic attraction of nucleic acids at acidic pH and electrostatic repulsion for elution at basic pH. The beads are supplied as a neutral‑buffered suspension (20 mM PBS, pH 7.4, 0.09 % azide, 0.1 % antioxidant) and remain stable for at least 24 months when stored unopened, protected from light.

The document provides detailed reagent recipes, step‑by‑step extraction protocols for plasma cfDNA, microRNA and other biomolecules, and performance data such as a separation capacity of ~50 µmol g⁻¹ for Acid Red 13 at pH 4.4. It also includes stability tests, regeneration procedures, and comparative third‑party testing against competing magnetic bead products. This manual is written in Chinese.

Covers: Product Overview · Physical and Chemical Specifications · Reagents and Equipment · Extraction Protocol · Performance Data · Stability and Regeneration