Zeta potential controls200 nmZeta Potential Control Positively Charged +60 mV (6 x 3 mL syringes)Cat. No. 70306NPack size 6 x 3 mLPrice Zeta potential controls
Zeta Potential Control Negatively Charged -60 mV (6 x 3 mL syringes)
- Cat. No.
- 70306C
- Diameter
- 200 nm
- Pack size
- 6 x 3 mL
- Type
- Certified reference material
- Manufacturer
Technical data
| Nominal diameter | 200 nm |
|---|---|
| Zeta potential | -60 mV |
| Charge | negative |
| pH | 8.0 ± 0.5 |
| Form | suspension in syringe |
| Solids | 0.02% |
| Material | Surface-modified polystyrene particles |
| Nominal zeta potential | -60 mV (negatively charged) or +60 mV (positively charged) |
| Density | 1.05 g/cm³ |
| Refractive index | 1.59 at 589 nm |
| Medium | Free of charged surfactants, buffered against CO₂ uptake |
| Pack | Ready-to-use single-use syringes with Luer-lock fitting: 6 x 3 mL or 10 x 10 mL |
| Methods | Electrophoretic mobility and streaming potential |
| Shelf life | 12-18 months from the date of manufacture |
| Storage | Room temperature |
Description
Ready-to-use zeta potential controls: 200 nm surface-modified polystyrene particles, negatively (-60 mV) or positively (+60 mV) charged, to verify instruments that measure electrophoretic mobility or streaming potential. The medium contains no charged surfactants and is buffered against CO₂ uptake, so background signal is minimal and the chemical environment stays stable. Concentration suits the most common measurement set-ups, with a defined electrophoretic mobility value. Single-use Luer-lock syringes of 3 mL (6 per pack) or 10 mL (10 per pack), shelf life 12-18 months from manufacture at room temperature.
Applications
- Verification of electrophoretic mobility zeta potential analysers
- Verification of streaming potential instruments
- Check before colloidal stability measurements (inks, paints, water treatment)
- Reference in surface modification studies of functional particles
What you receive
Certificate
Lot certificate with certified diameter or concentration, traceable to NIST and SI.
Import and shipping
Import, customs and Italian invoice handled by VitaSan Labs, tracked shipping.
Technical support
We help you choose diameter, concentration and format for your instrument and method.
More products: zeta potential controls
Zeta potential controls200 nmZeta Potential Control Positively Charged +60 mV (6 x 3 mL syringes)Cat. No. 70306NPack size 6 x 3 mLPrice Zeta potential controls200 nmZeta Potential Control Negatively Charged -60 mV (10 x 10 mL syringes)Cat. No. 71010CPack size 10 x 10 mLPrice Frequently asked questions
Are the standards traceable?
Yes: mean diameter, standard deviation and uncertainty are traceable to NIST and the International System of Units (SI) and stated on the certificate of every lot. The ISO/IEC 17025 series is certified by an accredited metrology laboratory.
Which control do I need for USP <788>?
For subvisible particle counting in injectables, use the PharmaCount controls: the USP <788> set for routine verification, the 3M and PC sets for single diameters. For USP <729> there is PharmaCount BiCal.
Can I order a diameter I do not see?
Yes: other diameters, concentrations and dyes are available on request. Tell us the value you need and we will send a quote.
How do I see the prices?
List prices per pack, excluding VAT, are shown after signing in to the customer area. With the quote request we confirm price, availability and delivery time.