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The H4000-BAR is the magnetic stir bar consumable — 1 × 5/16 inch Teflon-coated stir bar at $11 each. Standard mid-size stir bar for vessel volumes ~50–500 mL with magnetic stirrer chasses (H3710 / H3770 / H4000 hotplate / stirrer families).
Author confidence note (MEDIUM) — class flag: Universe
capitalis incorrect for a single magnetic stir bar (clearly consumable / replenishable workflow item); flagging FQ-class.
| SKU | H4000-BAR |
| Type | Magnetic stir bar (single) |
| Dimensions | 1 × 5/16 in |
| Pack format | 1 stir bar |
| Sister 10-pack | H4000-BAR-10 ($96, $9.60/bar — bulk discount) |
| Compatible chasses | H3710-S / -HS, H3770-S / -HS, H3715, H4000-H, and any other magnetic stirrer with compatible magnet field |
| List price | $11 |
Pick the H4000-BAR (single) when:
Pick H4000-BAR-10 ($96) when:
Pair with magnetic stirrer chassis — verify magnetic-field compatibility (most magnetic stirrer chasses accommodate this size class).
Plan reorder cadence based on per-week stir-bar attrition.
Confirm at quote: chassis pairing, projected reorder cadence, single vs bulk pack, and lead time.
Warranty: Per Benchmark Scientific standard consumable terms.
Stir bar pack pair: H4000-BAR (single, $11) and H4000-BAR-10 (10-pack, $96 — $9.60/bar bulk).
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