Single-Walled Carbon Nanotube Slurry Testing Service for Global Advanced Material Compliance
As an ISO/IEC 17025 accredited laboratory, we provide a specialized single-walled carbon nanotube slurry testing service that verifies the purity, dispersion quality, structural integrity, electrical performance, and chemical safety of SWCNT suspensions used in transparent conductive films, battery electrodes, composites, and printed electronics. Our single-walled carbon nanotube slurry testing service supports manufacturers and exporters targeting the European Union, North America, East Asia, and the Middle East, ensuring conformity to ISO, ASTM, IEC, and SEMI standards with reports accepted by notified bodies and major buyers worldwide.
Product Samples We Regularly Test Under Our Single-Walled Carbon Nanotube Slurry Testing Service
- Aqueous SWCNT dispersions with surfactants or polymers — for inkjet printing, spray coating, and roll-to-roll processing of transparent electrodes
- Solvent-based SWCNT slurries with NMP, DMF, or alcohol carriers — for battery slurry casting and functional coating applications
- High-concentration SWCNT pastes and gels — for extrusion, screen printing, and composite masterbatch preparation
- Functionalized and doped SWCNT slurries — with oxygen, nitrogen, or metal nanoparticle modification for enhanced conductivity or catalytic activity
- Stabilized SWCNT suspensions for biomedical and sensor applications — with biocompatible dispersants and controlled pH
- Custom-formulated and OEM-specific SWCNT slurry products — with defined viscosity, solid content, and dispersion requirements
Single-Walled Carbon Nanotube Slurry Testing Service for Purity and Composition Analysis
- Carbon nanotube content and solid fraction determination per ASTM E1131 and ISO 3251 — the slurry is dried and the residual mass is measured to calculate the SWCNT concentration and the total solid content, verifying the declared loading for the intended application.
- Elemental analysis and catalyst residue quantification by ICP-MS per ASTM E3061 — the slurry is digested and the concentrations of iron, cobalt, nickel, molybdenum, and other metal catalysts are quantified to ensure the SWCNT purity meets the specification for electronic or energy storage applications.
- Thermogravimetric analysis for carbon purity and surfactant content per ASTM E1131 — the mass loss profile under nitrogen and air distinguishes SWCNT, amorphous carbon, and organic dispersants, providing the carbon purity percentage and the residual surfactant level.
- Raman spectroscopy for SWCNT quality and defect density per internal validated protocol — the intensity ratio of the G-band to D-band is measured to assess the degree of structural order and the presence of defects in the single-walled carbon nanotubes, correlating with electrical and thermal performance.
- UV-Vis-NIR absorption spectroscopy for metallic and semiconducting ratio estimation per internal method — the optical absorption spectrum is analyzed to identify characteristic van Hove transitions and to estimate the relative abundance of metallic and semiconducting SWCNTs in the slurry.
Single-Walled Carbon Nanotube Slurry Testing Service for Dispersion and Stability
- Particle size distribution and aggregate size measurement by dynamic light scattering per ISO 22412 — the hydrodynamic diameter of SWCNT bundles or individual tubes in the slurry is measured to verify that the dispersion is uniform and that no large aggregates remain, ensuring consistent coating and printing performance.
- Zeta potential and surface charge analysis per ISO 13099-1 — the electrophoretic mobility of the dispersed SWCNTs is measured to determine the zeta potential, which indicates the electrostatic stability of the slurry and predicts its shelf life against agglomeration.
- Viscosity and rheological behavior per ISO 3219 and ASTM D2196 — the shear viscosity, yield stress, and thixotropy of the SWCNT slurry are characterized using rotational rheometry to verify pumpability, sprayability, and screen-printability for the target manufacturing process.
- Sedimentation and storage stability testing per internal validated protocol — the slurry is stored under controlled conditions and the change in concentration, particle size, and visual appearance is monitored over time to predict the usable shelf life and to detect any irreversible settling or gelation.
- pH and conductivity measurement per ISO 787-9 and ASTM D1125 — the acidity or alkalinity and the electrical conductivity of the slurry are measured to verify compatibility with substrates, inks, and downstream processing, and to detect ionic contamination from dispersants or residual acids.
Single-Walled Carbon Nanotube Slurry Testing Service for Film and Coating Performance
- Sheet resistance of coated films by four-point probe per ASTM F390 and IEC 62607-6-1 — the SWCNT slurry is coated onto a standard substrate and the sheet resistance is measured to verify the electrical performance of the resulting transparent conductive film or electrode layer.
- Optical transmittance and haze of SWCNT films per ASTM D1003 and ISO 14782 — the visible light transmittance and the scattering haze of the coated film are measured to assess suitability for display, touch screen, and photovoltaic window applications.
- Adhesion of SWCNT coating to glass, PET, and metal substrates per ASTM D3359 and ISO 2409 — cross-cut tape testing evaluates the bonding of the coated SWCNT film to the target substrate, ensuring durability during flexing, cleaning, and device assembly.
- Flexural endurance and bending stability of coated films per IEC 62715-6-2 — the SWCNT-coated flexible substrate is repeatedly bent and the change in sheet resistance is recorded to predict performance in flexible and foldable electronics.
- Uniformity and surface morphology by scanning electron microscopy per ASTM E1508 — the dried SWCNT film is imaged to assess the network density, bundle size, and the absence of large aggregates or bare spots that would reduce electrical and optical quality.
Chemical Safety and Restricted Substance Compliance for Single-Walled Carbon Nanotube Slurry
- RoHS compliance per IEC 62321 and EU Directive 2011/65/EU — quantitative screening for lead, mercury, cadmium, hexavalent chromium, PBBs, and PBDEs in the slurry, dispersants, and packaging materials.
- REACH Annex XVII and SVHC screening — targeted analysis of Substances of Very High Concern including specific phthalate plasticizers and organotin stabilizers that may be present in the formulation.
- Volatile organic compound and residual solvent analysis per ISO 11890-2 and ISO 16000-3 — the solvent content and any harmful VOC emissions from the SWCNT slurry are quantified to ensure workplace safety and compliance with air quality regulations.
- Heavy metals in packaging per EU Directive 94/62/EC — verification that the sum concentration of lead, cadmium, mercury, and hexavalent chromium in the containers and labels is below the 100 ppm regulatory limit.
- Nanoparticle release and dustiness assessment per ISO/TR 19601 — for dried SWCNT films or powders produced from the slurry, the potential release of nanoparticles during handling is evaluated to support occupational safety documentation.
Report Recognition and ISO/IEC 17025 Compliance
All methods described in this single-walled carbon nanotube slurry testing service fall within our ISO/IEC 17025 scope of accreditation. Our technical reports are accepted by European notified bodies, by North American and Asian electronics and energy storage OEMs, and by customs and regulatory authorities across the Middle East, Australia, and Asia. Whether you require a complete qualification dossier for a new SWCNT slurry formulation, a batch release inspection for an export shipment, or a root cause failure analysis of a dispersion or coating performance issue, our laboratory provides the measurement accuracy and nanomaterials expertise that the global advanced materials industry demands.
