What is wholemelt?

“Wholemelt” (often written as whole-melt) is an umbrella term used in the market for high-purity, solventless concentrates that fully melt with minimal residue when heated. Because it’s typically viscous at room temperature and sensitive to heat and shear, the hardware match—airflow, wicking material, and chamber geometry—matters as much as the material itself.

How wholemelt differs from other concentrates

Texture & flow

Compared with distillate blends formulated for easy wicking, wholemelt can be more temperature-sensitive and may require tighter thermal control and a short pre-heat pulse. For B2B buyers, this translates into selecting atomizers with consistent coil resistance and reliable power management (rather than simply “high wattage”).

Residue & cleanliness

Wholemelt is valued for clean melt behavior. That places a spotlight on the materials inside the hardware—stainless steel grades, ceramics, seals, and flux residues from manufacturing. Buyers often prioritize vendors with documented materials disclosure and heavy-metal screening of wetted components.

Test conditions & comparability

When third-party labs discuss performance, look for standardized puffing conditions so numbers are comparable. For e-cigarette/vapour products, ISO 20768 defines routine analytical vaping machine conditions (puff duration/volume/interval) used in lab testing; while conceived for nicotine devices, it’s widely referenced for method consistency. :contentReference[oaicite:7]{index=7}

Best use cases (B2B context)

• Limited releases & connoisseur SKUs: Small runs where flavor integrity and melt behavior are the selling points.
• Screen-enabled disposables: Where temperature or puff counters help teams dial-in pre-heat and educate users. Consider robust, proven platforms such as your ACE Ultra-class hardware for consistent thermal delivery.
• Dual-chamber formats: Blend testing or A/B flavor flights; chamber isolation can reduce cross-contamination. See options comparable in footprint to your SLUGGERS category for buyers who want familiar ergonomics.

Always align with local regulations. Hardware guidance here focuses on materials and engineering, not end-product claims.

Sizing advice: hardware & packaging

Wholemelt’s rheology and sensitivity to shear/heat mean that “bigger isn’t always better.” Start with conservative fill sizes, then scale after QC burn-in.

Recommended starting points

Filling & handling tips

• Pre-condition cartridges and concentrate to reduce viscosity shocks; avoid prolonged exposure to high heat.
• Use torque-controlled capping and verify seal integrity—viscosity fluctuations can stress O-rings.
• Run a short burn-in (standardized puffs) before case-packing to catch early wicking anomalies; document conditions for comparability (see ISO 20768 lab regimes). :contentReference[oaicite:8]{index=8}

Compliance pointers for hardware buyers

Even when you sell empty devices, your B2B customers expect safety documentation for device materials and manufacturing processes. At a minimum:

• RoHS: Request declarations showing restricted substances compliance for electrical/electronic equipment (EU Directive 2011/65/EU). :contentReference[oaicite:9]{index=9}
• REACH: Ask suppliers to screen wetted parts and polymers against the SVHC Candidate List and maintain up-to-date documentation. :contentReference[oaicite:10]{index=10}
• Process cleanliness: Seek evidence of flux removal/ionic cleanliness where applicable, and materials traceability for metal/ceramic parts.
• Test transparency: When labs report aerosol or thermal performance, check that method conditions are declared (for example, ISO 20768 machine settings). 

Terminology like “2 g” vs “2 mL” refers to mass vs volume and should not be treated as equivalent—density varies by formulation. Disclose units precisely in spec sheets.

Quick FAQ

Is wholemelt suitable for any cartridge?

Not necessarily. Match viscosity and melt behavior to wicking pathway and coil geometry. Start with smaller chambers and verified pre-heat control, then scale.

Do I need a screen-enabled device?

It isn’t mandatory, but screens and consistent power management can reduce trial-and-error during onboarding—especially for boutique releases using sensitive material. Consider platforms in the ACE Ultra tier that are designed for repeatable power delivery.

What documentation should I keep?

Supplier material declarations (RoHS/REACH), incoming QC records, filling SOPs, and any lab test reports with declared puffing regimes. For definitions of routine analytical vaping conditions, see ISO 20768 references. :contentReference[oaicite:12]{index=12}