Digestion Vials and Accessories
For all of your accessories needs on HotBlocks, we've got it covered. Thermometers, Digesiton Vials, Racks and Timers will be included in the following pages. Please do not hesitate to call our technical sales staff at 1-800-343-5319 for any additional information.
We have not pressure tested any of these digestion vessels. They are intended for use in open top digestions.
Yes, we have a few options for glass digestion vials. SC432, SC441, and SC440 are all replacements for the SC475 vessel. If you need a specialty vial SC442 is a quartz digestion vial.
The cup measures 42 mm OD x 103 mm H.
These tubes are made of polypropylene. As such they have a recycling number of 5.
The SC475 cups have tiered pricing based on quantity. Please see the following link for pricing:\r\nhttp://www.envexp.com/products/2-Metals/MD-Metals_Digestions/HBV-Digestion_Vials_and_Accessories/SC475-50mL_Digestion_Vessel_with_Screw_Cap%2C_500pk
They have an outer diameter of 30 mm. They can be used with any system that accommodates that size. Polypropylene has a maximum temperature range of 130°C. They should not be used in centrifuges. Any flat bottomed container is prone to rupture inside a centrifuge.
No. These vessels do not have volume lines on them. Of the 50 mL vessels only the SC475 cups have graduation lines on them.
We want to ash samples at about 400 degrees then prep the residue in a hotblock. Will these vials withstand these temperatures?
These vials are made of borosilicate glass. They will safely withstand temperatures of at least 550°C.
You mentioned the SC475 cups are 29.5.5mm x 109mm in the Question/Answer, but we found out the SC475 has the OD of ~ 30 mm. Is there other types of the SC 475 with the OD of 34.5 mm?
Part number SC601 has an approximate outer diameter of 34.5 mm.
The SC545 cups are 29.5mm in circumference and 129mm in height. These cups are designed to fit our 50mL well HotBlocks.
In using the 100mL digestion vessel what is your suggested method to meet EPA compliance in the digestion of waste water samples? Do you use the Disposable watch glasses through the whole digestion
We recommend following the EPA method as written for the use of the disposable watch glasses. Different methods call for the use of covered samples at different periods of the digestion. The HotBlock instruction manual comes with adaptations of many of the EPA methods in its appendix. These adaptations should be used as a guide with the actual method being the final authority for reagents, volumes, and digestion temperatures and times.
These cups are molded from polypropylene. The highest temperature that they can withstand without beginning to deform is 130 C.
The thermometer is NIST certified. The holder can be purchased separately and is part # SC981B.
This is a digital thermometer and holder that will fit on the top of our SC415 digestion vessel. Some auditors require outside monitoring of the sample temperature to verify that the temperature of the liquid is at the appropriate level. This will help to accomplish that task.
We are having zinc contamination issues with your SC475 caps. Do you have or can you make non-pigmented caps for the digestion vials?
We currently only offer the caps in green or white.
These are manufactured from polypropylene.
Is the base of your # SC601 completely flat ? We are using the CPI 50 mL tube at this moment, and the base of the tube is not completely flat.
The SC601 cup is mostly flat on the bottom. It does stand up on its own but the bottom of the cup has a small dimple that is concave up into the bottom of the cup. The SC475 vessel is completely flat on the bottom with no dimple at all. It is a screw cap instead of a snap cap.
The SC415 and the SC414 are the same sample vials, the SC415 come with caps and the SC414 do not. Certificates of analysis are included with these vials showing metals background.
Lot #s for the various parts molded here at Environmental Express are based on the partent resin used for those parts. Those parts that use the same type of plastic are often molded with the same lot of resin material.
Our SC475 tube is 39.45mm diameter at the bottom and 30.25mm diameter at the top, just below the screw threads. The height of the cup is 106mm.
If you are using a separate vessel to monitor temperature I would attempt to make it as closely related to your samples as possible so use the same volume as your samples.
The SC475 cups are 29.5mm x 109mm. We also offer part # SC601 which is the snap cap cup specific to the CPI block.
Pressure caps are not available for this vessel.
PFA (Teflon) has a maximum, continuous temperature of 260 deg C.
The cap is plastic. It is not designed to pop off at any given temperature--it is merely a cap to contain the liquid in the vessel.
There is no threading to this cup--it has a beaded lip to it and could potentially be stoppered. The cup is made of borosilicate glass.
By definition, plastic vessels can not be Class A volumetric devices--only glass vessels can. While the sample cups meet the Class A requirements of a graduated cylinder they are considered to be Class B because they are made of plastic.
Please contact email@example.com for any pricing questions.
The SC490 cups are made of polypropylene and have a temperature rating of up to 130 deg C so as long as the temperature is below this the cups will be fine.
18\" wide X 19.75\" deep X 18\" tall.
What is the highest conc acid (HF/HNO3/HCL) you can use with the tubes? Whats the maximum temperature, and what max time digestion\'s can take place?
The maximum temperature polypropylene will withstand is 130 deg C before it melts. The longer the tubes are exposed to high temperature the more brittle the plastic will become. Typical digestion times, following US EPA methods, is around 6 or 7 hours for a maximum. \r\nThese methods also typically use concentrated nitric, sulfuric, and hydrochloric acids though they are added to water samples. Small amounts of these may also be added to soil samples (around 1g of soil) and the polypropylene cups have held up well in those types of digestions. Hydrofluoric acid at room temperature is fine with polypropylene but may cause issues at elevated temperatures.
Is 125mL the largest volume vessel made? I am looking to use the flipmate, but need to filter @250mLs.
We have Flipmate devices available for both our 50mL vessels and our 125mL vessels. Unfortunately we do not have a larger vessel that will accept the Flipmate.
Yes--you can purchase a 500pk of green caps only as part # SC475-C or white caps only as part# SC475-CW.