Dispensing of High-Purity Chemicals in Trace Analysis:
The Dispensette® S Trace Analysis provides outstanding performance for precise volume dispensing of high-purity media for trace analysis. The components of the fluid path have been selected to only contain the highest purity materials, such as fluoroplastics and sapphire. Trace metal content of dispensed liquid generally in the low ppb range, or even in the low ppt range, depending on the application.
Plastics in contact with media consist of high-purity materials such as PTFE, ETFE, PCTFE, FEP and PFA. The purest sapphire is used for replaceable valves. Depending on the application, Platinum-Iridium (suitable for dispensing HF) or Tantalum (well-suited for dispensing acids, bases and hydrogen peroxide) are available as spring materials.
A field-tested cleaning process before use in trace analysis is described in the operating manual.
The high-purity materials release virtually no metal ions after appropriate cleaning. This makes the Dispensette® S Trace Analysis bottletop dispenser a superior choice for trace analysis.
Simple to mount discharge tube
Designed without additional sealing rings for ease of cleaning and maintenance
Replaceable discharge valve with safety valve
Olive-shaped filling valve for firmer attachment of filling tubes
Improved flow technology results in faster priming
Scalloped track for secure volume setting on analog dispensers
The 45 mm standard thread plus the included adapters fit most common lab bottles
The valve block can be rotated 360° so that the bottle label always faces the user for safety
Telescoping filling tube adjusts to different bottle sizes
Easy to disassemble for replacement of the dispensing cartridge
The Dispensette S Trace Analysis Bottletop Dispenser with Standard Valve is supplied with a Valve Mounting/Calibration Tool, Telescoping Filling Tube, Discharge Tube, ETFE and PTFE Adapters, Operating manual, One-year warranty, and Certificate of performance.
Recommended Application Range:
Platinum-Iridium (Pt-Ir) Valve Spring can be used for the following dispensing media: Acetic acid, Ammonia solution, Bromine, Hydrochloric acid, Hydrofluoric acid*, Nitric acid, Perchloric acid, Phosphoric acid, Sodium hydroxide 30 %, Sulfuric acid, Water
Tantalum Valve Spring can be used for the following dispensing media: Acetic acid, Ammonia solution, Bromine, Hydrochloric acid, Hydrogen peroxide, Nitric acid, Perchloric acid, Phosphoric acid, Sulfuric acid, Water
*Note: Hydrofluoric acid reacts slightly with sapphire resulting in mildly elevated aluminum values. To reduce these values we recommend discarding 3-5 dispensings of 2 ml each before performing the analysis. Compounds containing fluorine, such as NaF, attack tantalum.
Limitations of Use: This instrument is designed for dispensing liquids, observing the following physical limits:
Use between +15°C and +40°C (59°F and 104°F) of instrument and reagent
Density up to 3.8 g/cm³
Vapor pressure up to max. 600 mbar; aspirate slowly above 300mbar in order to prevent the liquid from boiling
Kinematic viscosity up to 500 mm²/s (dynamic viscosity [mPas] = kinematic viscosity [mm²/s] x density [b/cm³])
Operating Exclusions: Never use this instrument with:
Liquids attacking Al2O3 sapphire or fluoroplastics like ETFE, FEP, PFA, PCTFA, and PTFE (e.g., dissolved sodium azide*)
Liquids which are decomposed catalytically by platinum-iridium (e.g. H2O2) or tantalum, depending on the construction of the instrument
Explosive liquids (e.g., carbon disulfide)
Suspensions as solid particles may clog or damage the instrument (e.g., of charcoal)
The Dispensette® TA must NOT be autoclave
*Dissolved sodium azide permitted up to a max. concentration of 0.1%
*A ≤ ± %
*A ≤ ± µL
*CV ≤ %
*CV ≤ µL
for Bottle Thread
*The value of Accuracy (A) and Coefficient of Variation (CV) are final test values referring to the delivered nominal volume, instrument and distilled water at equilibrium with ambient temperature (20°C/68°F) and with smooth operation.
Seller warrants that its Products are free from defects in materials and workmanship as set forth in applicable operating instructions at the date of shipment to the original Buyer and will conform to the Contract specifications or such other specifications which constitute technical improvements to the Product.* The exclusive remedy of the Buyer in the event of a breach of the foregoing warranty is replacement or repair (at Seller's option) of any defective Product. No goods shall be returned to Seller for repair or replacement pursuant to this warranty without prior written approval and accompanied by a completed health and safety declaration (as specified in Paragraph 7). All cleaning, decontamination, and shipping costs shall be the sole responsibility of the Buyer together with any damage to the goods that might occur in transit to or from Seller. Under no circumstances does Seller's responsibility or warranty extend to Products other than those manufactured or distributed by Seller; nor does Seller's liability extend to any Products, articles or parts which are furnished by Buyer or obtained from other manufacturers or suppliers at Buyer's request and/or in accordance with Buyer's specifications. In the event that Seller is unwilling or unable to repair or replace any defective or nonconforming Product due to change in technical standards, technical modifications, unavailability of material or parts, or any other reason, Buyer shall be entitled to a return of the purchase price paid for such Product as its sole and exclusive remedy. Seller assumes no responsibility for the effective performance of any specific scientific application relying on Products supplied under this Contract beyond published Product specifications at the time of sale. Seller assumes no responsibility for conformance with local building codes as they may apply in the installation of Products supplied by the Seller. Seller assumes no responsibility whatsoever for the accuracy of designs, specifications or materials furnished or specified by Buyer.
No return will be accepted by the seller for any reason without prior written authorization. Returns will be accepted only if products are in new and unused condition and accompanied by a health and safety declaration as regards potential contamination with hazardous materials due to customer use of the product. The manufacturer reserves the right to assess a 25 percent restocking fee at their discretion. All shipping charges remain payable. This manufacturer assesses order cancellation fees if a submitted order is cancelled prior to shipment.