ICP-MS Instrument Operations Log — ICPMS-01
=============================================
Instrument:   Agilent 7900 ICP-MS, S/N JP12345678
Operator:     mvasquez
Date:         2026-06-16

06:30  Power on, plasma ignition
06:35  Plasma stable, gas flows nominal
06:42  Daily tune complete (ZN_CAL_20260616.tune)
       Be (m/z 9):  res=0.75 amu, RSD=2.1%   PASS
       Co (m/z 59): res=0.78 amu, RSD=1.4%   PASS
       Y  (m/z 89): res=0.76 amu, RSD=1.8%   PASS
       Tl (m/z 205):res=0.79 amu, RSD=2.6%   PASS
07:14  Initial calibration (5 points, 0-5000 ug/L)
       r^2 = 0.99998 (criterion >= 0.998) PASS
07:24  ICB (initial cal blank): all analytes < MDL PASS
07:30  ICV (initial cal verify): 99.2% PASS (limits 90-110%)
09:00  Batch DIG-2026-0142 loaded into autosampler
09:42  CCV-1: Zn 98.2%, Pb 101.4% PASS
10:24  GW-0010 injection #16: Zn counts 64,852,140 cps
       WARN: above ICAL-5 high standard (62,485,200 cps)
       Auto-flagging E, queueing dilution reanalysis
10:25  Dilution prep: B7-D10 = 100 uL GW-0010 + 900 uL DI
11:18  CCV-2: Zn 99.6%, Pb 100.1% PASS (cal stability confirmed)
11:24  GW-0010 (x10 dil) injection #18: Zn counts 15,494,896 cps
       Within ICAL range. Result: 1240 ug/L (x10 = 12,400 ug/L)
       Reportable. Flag: D
13:55  CCV-3: Zn 97.9%, Pb 98.4% PASS
14:30  Batch complete, 26 injections, no failed QC

Signed:    M. Vasquez                         2026-06-16 14:30
Reviewed:  K. Patel (QA)                      2026-06-16 14:32
