The K55UP is a tri-layer, ultra-pure HDPE 55-gallon drum produced with updated blow-molding controls, for operations whose priority is the lowest metal extractables. It shares the virgin ultra-clean inner liner and integral sump of the rest of the ultra-pure line, with more consistent layer distribution and a choice of three inner-liner resin grades.
| Attribute | Specification |
|---|---|
| Capacity | 55 gal (208 L) |
| Design | One-piece, closed-head (tight-head) drum with integral sump, produced with updated blow-molding controls |
| Construction | Tri-layer coextruded HDPE; colorants and UV stabilizers isolated in the exterior structure |
| Inner liner | Virgin ultra-clean HDPE — the only product-contact surface; three resin grades available |
| Bung openings | Accept industry-standard high-purity extraction, gasket, and closure hardware |
| UN/DOT certification | 1H1/Y1.9/150 · 1H1/Y1.4/150 (vented) · 1H1/Y1.9/300 — certified for PG II & III |
| Dip tube | UN/DOT certified with and without dip tube |
| Cleanliness verification | Class 1000 clean-room finishing; Class 100 liquid particle count testing |
| Traceability | Unique traceability identification label per drum |
| Dimensions & tare weight | Top diameter 22.88 in (58.1 cm) · Overall height 35.6 in (90.4 cm) · Overflow capacity 60 gal (227 L) · Drum body weight 22 lb (10.0 kg). Drum weight varies pending ratings. |
| IC55UPView IC55UP | K55UPThis page | C55UPView C55UP | ||||
|---|---|---|---|---|---|---|
| Design | One-piece, closed-head | One-piece, closed-head — updated blow-molding controls | Two-piece with handling ring | |||
| Packing groups | II & III | II & III | I, II & III — X-rated marking | |||
| Best suited when | You need the workhorse ultra-pure drum, with a 300 kPa option for higher-pressure chemistries | Your KPI is the lowest metal extractables, with a vented option available | You ship Packing Group I chemistry, or use ring colors for inventory identification | |||
| Shared by all three | Tri-layer construction · virgin ultra-clean inner liner · Class 100 LPC verification · unique traceability label per drum | |||||
Full side-by-side specifications for the complete lineup live on the All Products page.
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