Forum Forum Karczmy Bezdennego Kufla Strona Główna Forum Karczmy Bezdennego Kufla
Forum świata wyobraźni...
 
 FAQFAQ   SzukajSzukaj   UżytkownicyUżytkownicy   GrupyGrupy     GalerieGalerie   RejestracjaRejestracja 
 ProfilProfil   Zaloguj się, by sprawdzić wiadomościZaloguj się, by sprawdzić wiadomości   ZalogujZaloguj 

jordan Prepare solutions more efficiently without

 
Napisz nowy temat   Odpowiedz do tematu    Forum Forum Karczmy Bezdennego Kufla Strona Główna -> Forum Ogólne
Zobacz poprzedni temat :: Zobacz następny temat  
Autor Wiadomość
wlkleo00jah
Lord Cienia



Dołączył: 19 Lip 2013
Posty: 8307
Przeczytał: 0 tematów

Ostrzeżeń: 0/5
Skąd: England

PostWysłany: Pią 9:36, 09 Sie 2013    Temat postu: jordan Prepare solutions more efficiently without

Mettler Toledo is changing the way standards and samples are prepared in analytical laboratories by introducing the new Quantos [link widoczny dla zalogowanych] liquid dosing module. Quantos combines Mettler Toledo's weighing competence with unique powder and liquid dosing technology. [link widoczny dla zalogowanych] Up to now, when preparing a solution, the [link widoczny dla zalogowanych] amount of [link widoczny dla zalogowanych] substance to be dosed was determined by the required concentration and the available volumetric glassware. [link widoczny dla zalogowanych] Quantos instead weighs the amount of substance which can be [link widoczny dla zalogowanych] only a few milligrams and automatically adds solvent to accomplish the correct concentration. Instead of the glassware, the user decides on the amount of substance and may thus realize significant savings. Substance and solvent can directly be dispensed into the target vial instead of a volumetric flask simplifying the solution preparation process. Automation makes the process error resistant reducing out-of-specification results.
In analytical laboratories preparing samples and standards for example, for high-performance liquid chromatography (HPLC) analysis is a time consuming, repetitive and error prone task. When preparing [link widoczny dla zalogowanych] solutions for [link widoczny dla zalogowanych] HPLC, the amount of substance is [link widoczny dla zalogowanych] defined by the glassware and target concentration. . The tolerance on the concentration defines how exact that amount must be dosed. For example, preparing a concentration of 1:1000 to within +/-10% requires dosing between 90 and 110mg into a 100ml volumetric flask. This can be a challenge especially when the substance is a paste or crème that is hard to dose.
Quantos instead weighs the amount of substance which can be only a few milligrams and automatically adds solvent to accomplish the correct concentration. There is no need to dose substance to a defined value, [link widoczny dla zalogowanych] as the over/under weight of the solid is compensated for, by adjusting the solvent addition to reach the exact concentration.
Today's advancements in preparing solutions make it possible to realize significant cost savings as the required amount of solution for today's analytical methods is very low. For example, typical HPLC instruments need 10-20 ?l of solution per injection. Greater than 99% of prepared solutions are typically disposed of without being used. When using Quantos, the amount of substance is no longer determined by volumetric flasks but by the minimum weight of the balance. Therefore in the example savings [link widoczny dla zalogowanych] of greater than 90% of substance and solvent can be realized. Substance and solvent can now be dispensed directly into the target vessel with unprecedented speed and accuracy eliminating the associated expense of [link widoczny dla zalogowanych] glassware management and wasted [link widoczny dla zalogowanych] stock solutions.
Out-of-specification results in an analytical laboratory require significant resources and time to resolve. Questions that arise are: was the correct flask used, was the calculation and transcription done correctly, was the [link widoczny dla zalogowanych] meniscus aligned with the mark? Automating the solution preparation process using Quantos gravimetric dispensing technology will reduce the potential sources of error and thereby reduce the risk of [link widoczny dla zalogowanych] out-of-specification results.


Post został pochwalony 0 razy
Powrót do góry
Zobacz profil autora
Wyświetl posty z ostatnich:   
Napisz nowy temat   Odpowiedz do tematu    Forum Forum Karczmy Bezdennego Kufla Strona Główna -> Forum Ogólne Wszystkie czasy w strefie EET (Europa)
Strona 1 z 1

Skocz do:  

Możesz pisać nowe tematy
Możesz odpowiadać w tematach
Nie możesz zmieniać swoich postów
Nie możesz usuwać swoich postów
Nie możesz głosować w ankietach


fora.pl - załóż własne forum dyskusyjne za darmo
Powered by phpBB © 2001 phpBB Group

Chronicles phpBB2 theme by Jakob Persson (http://www.eddingschronicles.com). Stone textures by Patty Herford.
Regulamin