What’s the difference between TE and blastomere biopsy pipettes ?

Inner Diameter: TE pipettes are wider (~15–20 µm ID) to aspirate multiple trophectoderm cells at once, whereas blastomere pipettes are narrower (~10 µm ID) for single‐cell removal.

Taper Length: TE pipettes have a longer taper (150–200 µm) to reach the TE layer without disturbing the inner cell mass; blastomere pipettes use a shorter taper (100–120 µm) for precise entry into individual blastomeres.

Tip Geometry: TE tips are often slightly flared or fire-polished to scoop clusters, while blastomere tips have a sharper bevel for clean single-cell aspiration.