reagents, internal standards, surrogates, glassware, apparatus, equipment, solvents and analyses. laboratory calibration blank An aliquot of reagent water, possibly adjusted in pH, but without addition of other reagents. laboratory dry blank or laboratory procedural blank An aliquot of solvent representing the volume used for RFS extraction treated as an environmental sample but not processed through resin or filters. instrument blank Verification of calibration blank continuing check blank
Here's how you can check your memory usage in real time in Ubuntu. 1. Open a terminal window. 2. Type in the following command then hit Enter. watch -n 1 free -m 3. You can also use this command: watch -n 1 cat /proc/meminfo. For more, see the original article at the link below.
Select Adjust Date/Time to open the Date and Time box. 3. Click the Internet Time tab and then select the Change Settings button to open the Internet Time Settings box. 4. Select the check box to synchronize your computer's clock with an Internet time server. 5. Select the Server drop-down box and choose an Internet time server from the list.