Prepared 1M KCL and Standards.

Lachat run GLBRC MLE MC soil (Lake City) 10/11/2023. Soil was Reextracted on 2/23/2024 due to contaminated KCL.

Acid washed dishes, Prepared Color Reagent (2 L) 200 ml phosphoric acid 80 gm sulfanilamide, 2.0 gm N-1-naphthylethylenediamine dihydrochloride, Dilute to 2L with Nanopure H2O.

Lachat run GLBRC Scale up Lux Arbor 12/07/2023.

Lachat run GLBRC MLE MN (Escanaba) soil 10/09/2023 - original sample had contaminated KCL, soil was reextracted on 2/21/2024.

Reconditioned Cadmium Column.

Acid washed dishes, Lachat run SWF 8/15/2024 soil (Ashim).

Prepared 1M KCL. Prepared Standards. Lachat run GLBRC MLE WN (Rhinlander) 10/04/2023 soil.

Prepared Ammonium Chloride Reagent (4L): 320 gms Ammonium Chloride 4.0 gms EDTA pH to 8.45 with NaOH, store

Prepared fresh Phosphate Buffer (1L) 28 gms Sodium Hydroxide pellets 50 gms sodium phosphate dibasic heptahydrate dilute to 1 L with nanopure.

Prepared EDTA Reagent (1L) 66 gms ethylenediamine tetraacetic acid disodium salt dihydrate (EDTA) Approximately 7.0 gms sodium hydroxide pellets ph to 7.03 with NaOH pellets then dilute to volume with nanopure.

Replaced all reagent lines.

Prepared 1M KCL, Lachat run GLBRC MLE WN Rhinelander soil 10/4/2023. The dilutor malfunctioned during the run, only partially completed. The Dilutor was sent for repairs 8/6/2024, returned in September.

Prepared Color Reagent (2 L) 200 ml phosphoric acid 80 gm sulfanilamide, 2.0 gm N-1-naphthylethylenediamine dihydrochloride, Dilute to 2L with Nanopure H2O.

Acid washed dishes, Lachat run GLBRC MLE soil WC Hancock 10/3/2023.

Reconditioned Cadmium Column.

Prepared fresh Phosphate Buffer (1L) 28 gms Sodium Hydroxide pellets 50 gms sodium phosphate dibasic heptahydrate dilute to 1 L with nanopure.

Prepared EDTA Reagent (1L) 66 gms ethylenediamine tetraacetic acid disodium salt dihydrate (EDTA) Approximately 7.0 gms sodium hydroxide pellets ph to 7.03 with NaOH pellets then dilute to volume with nanopure.

Lachat run LTER T4 soil 09/18/2023

Prepared 1M KCL. Prepared standards. Lachat run LTER T3 soil 09/18/2023.

Lachat run LTER soil 08/08/2024. Acid washed dishes.

Lachat run LTER soil T4 (T-21) 7/17/23

Prepared standards, Lachat run LTER soil T3 (T-21) 7/17/24

Acid washed dishes, Prepared Color Reagent (2 L) 200 ml phosphoric acid 80 gm sulfanilamide, 2.0 gm N-1-naphthylethylenediamine dihydrochloride, Dilute to 2L with Nanopure H2O.

Replaced reagent lines, Reconditioned Cadmium column.

Lachat run SWF Lysimeters 2024 (Dave and Lydia).

Prepared Ammonium Chloride Reagent (4L): 320 gms Ammonium Chloride 4.0 gms EDTA pH to 8.45 with NaOH, store.

Acid washed dishes.

Finished dilutions from LTER T-21 soil Lachat run. Lachat run LTAR Lysimeters 6/10/2024.

Prepared Standards, prepared 1M KCL.

Lachat run LTER T-21 soil 7/5/2023.

Lachat run SWF soil 5/16/2024 and 6/3/2024 (Ashim and Elias).

Prepared 1M KCL.

Prepared fresh Phosphate Buffer (1L) 28 gms Sodium Hydroxide pellets 50 gms sodium phosphate dibasic heptahydrate dilute to 1 L with nanopure.

Prepared EDTA Reagent (1L) 66 gms ethylenediamine tetraacetic acid disodium salt dihydrate (EDTA) Approximately 7.0 gms sodium hydroxide pellets ph to 7.03 with NaOH pellets then dilute to volume with nanopure.

Prepared Color Reagent (2 L) 200 ml phosphoric acid 80 gm sulfanilamide, 2.0 gm N-1-naphthylethylenediamine dihydrochloride, Dilute to 2L with Nanopure H2O.

Acid washed dishes.

Prepared Standards, Lachat run LTER soil 7/19/23.

Lachat run LTAR Lysimeter 5/28/2024.

Lachat run LTAR Lysimeter 5/9/2024. Reconditioned Cadmium column.

Lachat run LTER Lysimeter 5/11/2023