diff --git a/defs/__init__.py b/defs/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/defs/debug_scrapyard.py b/defs/debug_scrapyard.py
new file mode 100644
index 0000000..a215dcb
--- /dev/null
+++ b/defs/debug_scrapyard.py
@@ -0,0 +1,10 @@
+### -------------------------------------------------------------------------------- ###
+### SCRAPYARD TO DEBUG AND TEST FUNCTIONALITY
+
+import sys
+print(sys.path)
+
+import pandas as pd
+from defs import OFRAnalyser, OFRSample
+
+analyser = OFRAnalyser(sourcefile="/Volumes/5505/People/David_Tschan/data/OFR_SMPS/2026/processed/06_June/20260612/20260612_SET02_EXP01_full.csv")
\ No newline at end of file
diff --git a/defs/defs.py b/defs/defs.py
index e1ded07..2ef304c 100644
--- a/defs/defs.py
+++ b/defs/defs.py
@@ -17,22 +17,33 @@ class OFRSample:
 
 class OFRAnalyser:
 
-    def __init__(self, sourcefile):
+    def __init__(self, sourcefile, headlines = 238) -> None:
         self.sourcefile = sourcefile
+        self.headlines = headlines
 
-    def read(self, headlines = 238):
+        head_row = pd.read_csv(filepath_or_buffer=self.sourcefile, header=self.headlines, nrows=1)
+        self.__max_sample = None
+
+    def __get_samples(self) -> None:
         pass
 
-    def getTotalMass(self):
+    def __samplelist_check(self, samplelist) -> None:
+
+        last_sample = samplelist[-1]
+
+        if last_sample > self.__max_sample:
+            raise IndexError("The last sample(s) go out of range of recorded samples")
+
+    def __mass_integrator(self, samplelist) -> None:
         pass
 
-    def plotTimeSeries(self):
+    def GetTotalMass(self, samples = 'all', plot = False) -> None:
         pass
 
-    def plotDistribution(self, sample):
+    def PlotSampleDistribution(self, sample) -> None:
         pass
 
-    def plotAllDistributions(self):
+    def PlotAllDistributions(self):
         pass
 
 ### -------------------------------------------------------------------------------- ###
diff --git a/playground.py b/playground.py
new file mode 100644
index 0000000..5a8dddc
--- /dev/null
+++ b/playground.py
@@ -0,0 +1,2 @@
+from defs.defs import OFRAnalyser
+analyser = OFRAnalyser(sourcefile="/Volumes/5505/People/David_Tschan/data/OFR_SMPS/2026/processed/06_June/20260612/20260612_SET02_EXP01_full.csv")
diff --git a/vis/playground.ipynb b/vis/playground.ipynb
index 2fc7051..6f0281d 100644
--- a/vis/playground.ipynb
+++ b/vis/playground.ipynb
@@ -1,16 +1,18 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "id": "ed5db215",
+   "metadata": {},
+   "source": [
+    "### Playground Python Notebook for Visualisation"
+   ]
+  },
   {
    "cell_type": "code",
-   "execution_count": 1,
-   "id": "initial_id",
-   "metadata": {
-    "ExecuteTime": {
-     "end_time": "2026-06-15T14:00:10.219007Z",
-     "start_time": "2026-06-15T14:00:09.797047Z"
-    },
-    "collapsed": true
-   },
+   "execution_count": null,
+   "id": "ee443e0d",
+   "metadata": {},
    "outputs": [],
    "source": [
     "from defs.defs import OFRSample, OFRAnalyser"
@@ -28,7 +30,7 @@
    },
    "outputs": [],
    "source": [
-    "anlsyr = OFRAnalyser(sourcefile=\"/Volumes/5505/People/David_Tschan/data/OFR_SMPS/2026/processed/06_June/20260612/20260612_SET02_EXP01_full.csv\")"
+    "analyser = OFRAnalyser(sourcefile=\"Z:\\People\\David_Tschan\\data\\OFR_SMPS\\2026\\processed\\06_June\\20260612\\20260612_SET02_EXP01_full.csv\")"
    ]
   },
   {
@@ -43,7 +45,7 @@
    },
    "outputs": [],
    "source": [
-    "anlsyr.sourcefile"
+    "analyser.sourcefile"
    ]
   },
   {